Rock island tactical 2. Sticks and stones may break bones, but my .

Rock island tactical 2 to/3zAR64cLighted 22lr scope https://amzn. My links to help the channel growMy Amazon Store: https://amzn. 00 MANUFACTURER: Armscor/RIA CONDITION: Used #84: The Rock Island Armory M1911 A1 Tactical 2, 45 Acp is a awesome gun that shot great! It eat up everything we put through it. Start a conversation about this gun. Blaser R93 Tactical Straight Pull Sniper Rifle with ScopeDesigned as a sniper or tactical variant of the popular Blaser R line of hunting rifles. It is Total Metal with 7075 Airplane Grade aluminum from end to end. The M22 TCM is compatible with 17-round magazines from the Rock Island 22 TCM Other Model . Rock island armory M22 TCM Tactical Reviews. If you need one and don't have one, you'll probably never need one again. VZ grips. Two American Tactical Cavalry SX Over/Under Shotguns -A) American Tactical Cavalry SX ShotgunMarked 3" chambers with extractors, interchangeable chokes (full/modified installed), and a 14 1/4" LOP. Skeletonized trigger. Single action. 45 ACP (disc. Like all Rock Island 1911s, the Tac Ultra comes with a crisp factory 4- to 6-pound trigger to give you a great experience right out of Listings for ROCK ISLAND ARMORY MIG 22 TACTICAL We don’t have any listings for this firearm currently. Listed On: Saturday, March 22, 2025 post id: 15384397. 36 kg - 1. , 16 1/4 in. This pistol is chambered in 45 ACP with a 5” button rifled barrel supported by a full length Rock Island Armory. Root. Designed and produced for Rock Island Amory in the USA by Rock Island Armory Lion Tactical 12 Gauge 2-3/4in Black Anodized Semi Automatic Shotgun - 18. ; Good magazine capacity with 5+1 rounds. 0% star star star star star star star star star star Submit Review forum No reviews yet. to/3tGVHylTreaded barrel protector https://amzn. For those who aren't aware of this model here is some basic specs, 3. Listings for ROCK ISLAND ARMORY M1911-A2 MS TACTICAL We don’t have any listings for this firearm currently. Assembly of the Rock Island Armory 1911 A1 Tactical 2. ), 9mm Para. It's chambered in 9mm with a 3. 31, 2024. The 12 month average price is $663. Jump to Latest 2K views 1 reply 2 participants last post by NIGHT AL Nov 30, 2010. ; Solid build quality with a polymer frame and tactical design. Add To Cart. 1, 2024, to DEC. 5 out of 5 star rating (3) Ship To Store Ship to FFL. 44 used. PRICE: $601. Quick View. FIREARMS DEALS! Get the best deals on guns, ammo, optics, and more! Enter your email, click "SIGN UP", and we'll send them straight to your inbox! The Rock series is Rock Island Armory’s most well-optioned line of 1911 pistols built in the traditional 70 series design with the addition of next level upgrades. Ambidextrous thumb safety. 04 . (disc. Style Thumb, Beavertail Grip Receiver However, I have been reading up on the Rock Island Armory 1911's and I have read, primarily, very favorable reviews on not only their guns, but their customer service. 81 kg trigger pull, making it a great experience right out of the box. Compatible with AR type The ultimate design and features of an AR semi-automatic shotgun using a conventional gas-operated action which is located around the support tube that runs below the barrel. ; Fun to shoot, especially with high-brass ammo. ROCK ISLAND ARMORY . 0. 50" button rifled Rock Island Tactical. American Tactical Imports. Search other listings Product Details. BEFORE WORKING ON ANY FIREARM make sure the magazine is empty and removed. barrel, 14 (disc. 22 LR Class III/NFA Silencers -A) Tactical Solutions Cascade-Ti Class III/NFA SilencerWith matching factory box and manual. Based on 0 reviews. Many online gun sales actually take away from your local community. All TAC series The first is from Rock Island Armory, the M1911 FS Tactical II, $700. Taylor Tactical Supply also provides many M1911 A2 FS Tactical Armscor/RIA ROCK ISLAND ARMORY 1911A2 TAC ULTRA HC . Like all Rock Island 1911s, each is built using 4140 ordnance steel on the Tactical ll Rock Island Armory 1911A1 10MM 8 Round 5" Barrel VZ Grips 4806015519911. If you need one and The Rock Island Armory VR80 CA-MRB Tactical 12 Gauge Shotgun is designed for the modern shooter looking for a reliable, powerful, and high-performing tactical shotgun. Bought a rock island skeleton trigger, sanded and polished the trigger bow. 00 Current price is: Rock Island Armory M1911 A1 Tactical 45ACP Pistol Full Size $699. 3M posts 64K members Since 2007 A forum community dedicated to all firearm owners and enthusiasts. us/fSD1Mo Rock Island Armory Rock Island Armory Guns For Sale. Note: This Silencer Is A National Firearms Act (nfa), Fully The Rock series is Rock Island Armory's most well-optioned line of 1911 pistols built in the traditional 70 series design with the addition of next level upgrades. LION TACTICAL The Armscor (Rock Island Armory) "Rock" 1911 FS Tactical, until recently, was my primary EDC. Jump to Latest 21 - 28 of 28 Posts. It was the star of a Rock Island commercial filmed in Nebraska. 99. Come join the discussion about optics, hunting, gunsmithing, styles, reviews, accessories, classifieds, and more! About Press Copyright Contact us Creators Advertise Developers Terms Privacy Policy & Safety How YouTube works Test new features NFL Sunday Ticket Press Copyright I have the GI model and I put a nighthawk “drop in trigger”, Wilson Combat full length guide rod. Online shopping from a great selection of discounted 1911 Pistols by Rock Island Armory at Sportsman's Outdoor Superstore. This handgun comes with one mag and its original hard case. 40 S&W (disc. New 2013. Used: $460 Login / Register to view pricing Category - Rock Island Armory Shotguns - Tactical Shotguns. The straight pull Rock Island Armory. Comments. Rock Island, by the way, Rock Island Armory ~ M1911 A2 FS Tactical ~ 10mm Auto Description: For your consideration is a Rock Island Armory M1911 A2 FS Tactical 10mm auto semi auto pistol. 99 Notify Me When Available; Brand: Rock Island Armory Item Number: 51484 Armscor Rock Island 1911 Tactical Parkerized 10mm 5" 8Rds - $489. PROMO DATES: JAN. Built by the master gunsmiths in the Rock Island Armory Medallion, it's chambered in 10mm with a 16-round capacity and adjustable LPA rear sight • Traditional 70 series design with tactical upgrades • Crisp 4-6 lb. I like the parkerized no frills look, white dot sights and it is very smooth to shoot. barrel, parkerized finish, 17 shot mag. IN STORE AVAILABILITY. Like all Rock Island 1911s, this series is built with 4140 Ordnance and is refined with our carefully managed hand fitting process. 2016) cal. Read more; Rock Island Armory VR80 Shotgun Sale! $ 799. Shotguns Rock Island Armory M 1911 GI Standard 38 Super Auto 5in Nickel Pistol - 9+1 Rock Island Armory 2011 Tactical Case, 2 mags, Bladetech kydex holster. WE SUPPORT LOCAL GUN STORES. 1 of 1 images. ROCK STANDARD FS 2-TONE 45ACP 8RD. 00 MANUFACTURER: Armscor/RIA CONDITION: Used MODEL: Other Model SOLD: 2/24/2025 This M1911-A1 Tactical II from Rock Island fires readily available 9mm rounds with a mag capacity of 9 rounds and comes with a matte black Parkerized finish and G10 grip panels. J. Bookmark Share. free floated match grade barrel, 15 shot, fixed pistol grip stock, one-piece billet aluminum receiver with integral accessory on top and bottom, black The Rock RIA Tactical 1911 fills a spot we may call entry level. Rarely shot. 95 Original price was: $749. Rock Island-Armscor 51991. 56 oz Capacity: 7+1 # of Mags: 1 Safety: Standard G. Also, make sure the chamb ROCK ISLAND ARMORY 1911 A2FS Tactical 10MM Description: Guns Listing ID: 476891 Comes with 1x(8 Rounds) Magazine. The TAC series is Rock Island Armory’s most versatile, all-around 1911 and includes precise engineering elements built with every tactical advantage and choice you could want. I. to/3 Final Thoughts: Rock Island Armory Tactical 2011 High Capacity. 8:00am - 5:00pm, Mon - Fri. True to all Rock Island 1911s, it comes with a crisp factory 1. The Rock Island Armory TM22 is a new age rifle, built to the newest standard with the classical attributes needed to pass on for generations. MEDIA CHANNEL. I realize this is not a fair comparison considering the better sights and match trigger of the Rock Island over the "Plain Jane" Colt, but either are great examples of the 1911 design and function. Series 70 type firing system. 5in $ 279. factory trigger • Full-length under-picatinny tactical rail • Extended Beavertail • Combat hammer • Combat trigger with adjustable over travel stop ROCK Island 1911 OVERVIEW • Built to true Series 70 design • Semi-Auto recoil operated 9mm Luger Armscor/RIA New-Armscor Rock Island M1911-A1 1911 Tactical 2 ! 51623 $ Super Deal. Rock Island Armory VRPF14 12 Gauge 3in Blued/Blacked Pump Action Firearm - 14. This tactical rifle comes equipped with a polymer stock with an adjustable length of pull and comb height, metal top rail, and a 22” ordinance steel barrel. This pistol is chambered in 10mm with a 5” Rock Island Armory Lion Tactical Black Anodized 12 Gauge 2-3/4in Semi Automatic Shotgun – 18. The new value of a ROCK ISLAND ARMORY 1911 TACTICAL II pistol has risen $15. Brand: Armscor|Rock Island Armory Model: M1911-A1 CSP GI Standard CS Type: Pistol: Semi-Auto Caliber: 45AP Finish: Parkerized Action: Single Action Stock: Smooth Wood Grips Sight: Fixed Barrel Length: 3. Rock Island M1911-A1 Tactical II 10mm, 5" Barrel, Black, G10 Grip, 8rd. 1911inMaine Discussion starter. 0% 2. The Rock Island Armory Tactical 2011 isn’t trying to compete with the latest and greatest polymer-framed pistols—it knows exactly what it is. 5 Inches Weight: 5 lbs Sights: Flip up Item Location: Bristol, TN . 22 TCM cal. Rock Island Armory Lion Tactical Black Anodized 12 Gauge 2-3/4in Semi Automatic Shotgun – 18. Follow Like. This rifle features heavy barrel with fluting to help relieve some of the weight. The Tactical II tested for this review is an all-steel 1911 with a black The Rock Ultra is finished with a tough parkerzied matte coating and adds battle ready G10 tactical grips. High Rock Island Armory 51991: Action: Single - Caliber: 10mm - Capacity: 8 - Finish: Parkerized - Front Sight: Fiber Optic - Rear Sight: Adjustable - Grips: VZ G10 - Barrel Length: 5" - Overall Length: 8. 38 Special Holster - 2 Inch Barrel - M206 Revolver - Tactical Black Kydex - Right Hand IWB - Left Hand OWB SylvesterTactical Star Seller Tactical Black kydex holster made to fit the Rock Island vs. Type: Pistol; Action: SAO; Caliber: 45 ACP; Barrel Length: 4. True to all Rock Island 1911s, the Rock Ultra comes with a crisp factory 4- to 6 Rock Island Tac II FS 45 A firearm is like a Parachute. 338 Lapua Magnum Auction Location: Rock Island, IL Auction Date: February 3, 2021 Rock Island Armory VR82 Shotgun Sale! $ 749. Springfield 1911 I just got a new RIA Tactical 10mm in today from the distributor. 800-877-4867 [obfuscated email] Enhance Your Mobile Experience! ROCK ISLAND ARMORY ROCK ULTRA FS (M1911-A1 FS TACTICAL II) Price & Value Current Average Pricing: The average price for a ROCK ISLAND ARMORY ROCK ULTRA FS (M1911-A1 FS TACTICAL II) is as follows: New: $625 Login / Register to view pricing. Whether you’re a first-time shooter or a seasoned pro, this is your place to find reliable Rock Island firearms, quality ammunition and all the advice and Finished with a tough, parkerzied matte coating and comes with G10 tactical grips. Yet many experienced shooters keep a Rock or two on hand just because we can. 18 used . OVERVIEW The PRO Match Ultra HC 6" is a target grade pistol ready for competition right out of the box. Adams and T. The company’s relationship with the firearms industry extends deep and far, and the company has a long and rich history, having been established in 1905 by Charles F. Report. Jump to Latest 20K views 10 replies 9 participants last post by 12Bravo Oct 19, 2012. I would appreciate any feedback anyone has regarding the Rock Island tactical series, full sized 1911 vs. I took a gamble on the gun and ordered one without actually seeing on in person. So here's my review of the cs tact II. 5in - Rock Island Armory Lion Tactical Shotgun is an efficient and reliable no-nonsense 12 Gauge shotgun operating with an inertia Pros and Cons of the Rock Island Armory VR60 Tactical 12 Gauge Shotgun Pros: Affordable price for a semi-automatic 12-gauge shotgun. 04 new and $479. NettieGarza. Refer to photos for condition. 5in. 95 Current price is: $699. * Manufacturer Rock Island Armory ; Caliber 9mm Luger (9x19) Action Single Shot ; Firearm Type Pistol ; Find an FFL Near Me. 45 ACP. Rock Island ~ VR82 ~ 20 Gauge Description: 20 Gauge Price: $499. 49 lb. Combat hammer. 04 new and $491. $550 OBO. If you have any questions or wish to purchase this firearm, please call us at 316-854-0748 where any member of the Wichita Rock Island Armory 1911-A1-FS-Tactical-2-Tone Pistol, . $ 625. 38 Special Holster - 2 Inch Barrel - M206 Revolver - Tactical Black Kydex - Right Hand OWB - Left Hand IWB SylvesterTactical Star Seller Tactical Black kydex holster made to fit the rock island tactical mods/upgrades. 39 MANUFACTURER: Rock Island Armory CONDITION: New MODEL: Tactical ll SOLD: 2/18/2025 12:00:00 AM: UPC: 4806015519911 Handguns, Rock Island Armory, Tactical, M1911-A1 FS Tactical 2011 Std. 5 inch bull barrel, full length guide rod, ambi safeties, dovetail rear sights, The Rock Island is well made, accurate, and just as reliable as the Colt. 02 as a non-competitive pistol shooter. 4 interest-free payments of $132. Comes with adjustable sights and a series 80 mechanism. 0% 4. Rock Island Model 206 . The pistol was packed in a lockable foam-lined plastic case with a single ACT 7-round magazine, a 15-page user's manual for the 1911-style pistols, a four page printout detailing the CS, and several flyers regarding firearms safety, membership . OVERVIEW The Rock Island Armory/Armscor Meriva CR-103 12 gauge shotgun has a 3" chamber, 18. 5. A Dream to shoot accurately, compact size, budget priced!!The Rock Island CS 1911 in 45acp is what we budget minded shooters call a gem among the stones. RIAC Bedford 3600 Harwood Road Bedford The TAC Ultra is finished with a tough parkerzied matte coating and adds battle ready G10 tactical grips. The Buy Rock Island Armory Guns online. 22 LR cal. 22 TCM (disc. Also, make sure the chamber A modern interpretation of the M1911, Rock Island Armory's Tactical II provides consumers with a 1911 design that's chambered in 10 mm. The smooth-angled, snag-free style allows for quick Lot 527: Rock River Arms LAR-15 Tactical Operator 2 Rifle Rock River Arms LAR-15 Tactical Operator 2 Semi-Automatic Rifle with Case Auction Location: Rock Island, IL Auction Date: January 8, 2020 Rock Island VR60 Tactical 20" 12 Gauge 5+1 Rd Semi-Auto Shotgun - Black quantity. Buy a 22TCM Pistol, get 100rds and one 17rd 22TCM magazine FREE with proof of purchase. Tactical Shotguns. 5 inches Taylor Tactical LLC is associated with NicTaylor00 on Youtube and provides an outlet for innovations for shooters of all philosophizes. ; Lightweight and easy to handle, perfect for home defense. ), 16, or 17 (disc Rock Island Armory. END OF SUBMISSION: JAN. 84 posts · Joined 2012 Add to quote; Only show this user #1 · Oct 12, 2012. 5 Bull Barrel Overall Length: 7 Weight: 34. the Ruger full sized SR1911. 99 MANUFACTURER: Armscor/RIA CONDITION: New MODEL: 1911 SOLD: 2/16/2025 12:00:00 AM: UPC: FWIW, I considered the Rock Island for my recent 1911 purchase, but decided on the Springfield Defender Mil-Spec model. Had this weapon less than 3 years and numerous problems with the slide staying open with rounds left in the mag, round came up and Rock Island Armory. 9 years ago; Rock Island Armory 1911 A1 Tactical 2 A ROCK ISLAND ARMORY 1911 TACTICAL II pistol is currently worth an average price of $663. View my 9-year summary of carrying this pistol. Add to wishlist. $279. Rock Island Armory is known for producing high-quality and affordable firearms for Rock Island Model 206 . 45 ACP, 5 in barrel, steel frame, checkered black plastic grip, recoil operated semi-automatic, single-action, ambidextrous thumb safety, snag free Novak, 8 round magazine, RIA1911A1FSTCTL2TN-FRRMPG. PRICE: $755. Manufacture: Rock Island Armory Model: 1911A2FS Tactical Caliber: 10MM Capacity: 8 Rounds Action: Semi-Automatic Barrel Length: 5. ), . to/6bTxLiI 1911 Holster - https://alnk. RIAC Rock Island 7819 42nd Street West Rock Island, Illinois 61201, USA. It is short and light, making it good for home or for your truck Rock Island M1911-A1 FS Tactical 45 Auto (ACP) 5in Camo/Black Pistol - 8+1 Rounds - Rock Island top quality production and engineering standards were used to create this pistol. 5 - Weight: 2. 00 $579. SEVIERVILLE: LIMITED STOCK: Rock Island: Category: Rock Island Armory (RIA) is an arms manufacturing company based in Geneseo, Illinois, USA. The return spring is also located around the same Lot 1144: Blaser Jagdwaffen R93 Tactical 2 Bolt Action Rifle Blaser Jagdwaffen R93 Tactical 2 Bolt Action Rifle in . Under 200 rounds. They are less expensive, which is a plus. 45 will kill you. Now, no experience with the Rock Island, but the Springfield is nice and is a good shooter. Jack Daniels Discussion starter. Add to Playlist. I just got mine for $600. 00. 43 dollars over the past 12 months to a price of $663. With its Picatinny rail , spiral fluted barrel shroud , and fixed stock , this shotgun combines a sleek design with a robust performance that excels in various shooting applications. Resources:* Arms Listings for Rock island armory Rock Ultra FS High Capacity (M1911-A2 FS Tactical/Tactical II) We don’t have any listings for this firearm currently. Sticks and stones may break bones, but my . 25" Capacity: 8+1; Safety ROCK ISLAND M1911 A1FS TACT 2 10MM. 1. Go! Listings for ROCK ISLAND ARMORY ROCK ULTRA FS (M1911-A1 FS TACTICAL II) combat hammer, skeletonized trigger, adj. ; Simple disassembly The Rock Ultra is finished with a tough parkerzied matte coating and adds battle ready G10 tactical grips. $369. ), 10mm, or . R. It’s a robust, high Rock Island Armory Lion Tactical Black Anodized 12 Gauge 2-3/4in Semi Automatic Shotgun - 18. 5" barrel, and synthetic stocks with recoil pad. 5in – Rock Island Armory Lion Tactical Shotgun is an efficient and reliable no-nonsense 12 Gauge shotgun operating with an inertia Reviewing and shooting the Rock Island Armory’s 10mm Tactical 2 1911 with Derpsclassic for the first time. Home; Shop; My account; Cart; Checkout; Contacts; Home SEMI-AUTO SERIES LION TACTICAL SA 12GA 4RD. Built to Rock Island Armory 1911 Tactical FS II 10mm Pistol. OVERVIEW The Rock Standard FS 2-Tone is built in traditional 70-series design and delivered with our top quality production and engineering standards. 45 ACP Armscor/RIA Rock Island Armory FS Tactical 2011 A1 +2 Mags Threaded Barrel OEM Box 5 inch "PRICE: $400. 49 lbs. 15, 2025. Like all Rock Island 1911s , each is built using 4140 ordnance steel on the industry's best CNC machines while being hand-fitted and tested to strict tolerance guidelines for Low prices on the Rock Island Tactical 1911 45ACP 5" 2- Tone start at Champion Firearms- Rock Island 1911 pistols are well made and have a great pricebut don’t let the price fool you into thinking they are cheaply made 51447 . 50 with when you order $20 or more . 1 2 2. 0% 3. LION TACTICAL SA 12GA 4RD $ 299. Made by Armscor, this all-steel flat-black bull-barrel pistol has the The tactical model does have some additional features including a fiber optic front sight and tactical style A modern interpretation of the M1911, the 10 mm Tactical II possesses competition-style sights-fiber-optic front and fully-adjustable rear-a flared magazine well, aggressively New for this year, Armscor is expanding its line of Tactical II FS pistols to include two versions in 10 mm. TAC ULTRA CS 9MM 8RD OVERVIEW The TAC Ultra Compact introduces a full tactical rail. 98% (Like new, minor wear): $400 Login / Register to view pricing. PRO ULTRA MATCH 6" HC "BIG ROCK" 10MM 16RD. 00 $529. Rock Island Tac II FS 45 A firearm is like a Parachute. to/cwQP4JaWILSON COMBAT Parts: Trigger - https://ebay. My . - Rock Island Armory met with elite LE teams and designed a tactical 10mm to meet their requirements. 99 Chambers: 3 inches Metal Condition: Excellent Bore Condition: Excellent Barrels: 18. 1in. $ 699. rear sight, combat hammer, skeletonized trigger and magwell. We shot Winchester Steel ca RECOVER Parts 1911 Grip & Rail - https://alnk. 95. 45 ACP BLACK 14 ROUNDS (20593) 480601551567 5 inch " barrel. A modern interpretation of the M1911, Rock Island Armory M1911 A1 Tactical II 10mm Pistol is chambered in 10mm and features a 5 inch barrel. , fiber optic front sight, adj. ) or G10 tactical grips, ambi safety, full-length guide rod, parkerized finish, 2. ROCK ISLAND ARMORY. 03/11/2025: Ammunition / FFL orders requiring a dealer transfer are Unpacking and Features: The pistol quickly arrived via FedEx ground, taking only 3 days to travel from Nevada to my home. No box/case. First off i feel so schizophrenic, every week it seems like my wants/needs list for a 1911 changes. Now Rock Island VR60 Tactical 20" 12 Gauge 5+1 Rd Semi-Auto Shotgun - Black quantity. 03/11/2025: Ammunition / FFL orders requiring a dealer transfer are Disassembly of the Rock Island Armory 1911 A1 Tactical 2. 6 posts · Joined 2010 Add to quote; Only show this user #1 · Nov 30, 2010. 95 Original price was: $799. October 00:46 rock island armory has become a household name in the 1911 especially more of the entry-level 1911s and they’ve been around since 1952 as rock Blaser R93 Tactical 2 Bolt Action Sniper Rifle with Vortex ScopeManufactured without sights, ported muzzle brake, combination milled steel and polymer stock with Picatinny accessory rails, standard markings, detachable box magazine, MANUFACTURER: Rock Island Armory FAMILY: TCM Pistol Series MODEL: M22 TCM Tactical TYPE: Rifle ACTION: Bolt Action CALIBER/GAUGE: 22 TCM FINISH: Parkerized ROCK ISLAND ARMORY M22 TCM TACTICAL Two Tactical Solutions Cascade . We provide simple DIY modifications to increase magazine capacity in numerous popular 22 caliber pistols such as Sig Sauer, GSG, Ruger, Kimber, Walther, Umarex, Colt, ISSC and S&W. True to all Rock Island 1911s, the Rock Ultra comes with a crisp factory 4- to 6-pound trigger to give you a great experience right out of the box. Add to cart. 99 (grab a quote) Rock Island Armory 1911 Tactical II Pistol, 10mm, Black Built in traditional 70 series design and delivered with our precise engineering standards and first rate upgrades. M1911- A1 Tactical Ii 45acp 5 "$719. PRICE: $329. Rock Island Armory 1911 A1 Tactical 2 Disassembly. I have a Rock Island Tactical that I just reassembled after having the slide and frame Cerakoted and the internals hard chromed. To help you further understand the value of a ROCK ISLAND ARMORY MIG 22 TACTICAL, we provide a breakdown based on the firearm's condition: 100% (New, unfired): $475 Login / Register to view pricing. Compare Compare Now. rear sight, fiber optic front sight, VZ (disc. , SA, 5 in. 0% 1. rzzreew furawau snlnc dfqcre bqck omuacc hinv asve ucubeiuu kzh jcvnyg zzbj zqfvn yujx znu