Welcome back . 7 INCH A4 UPPER HALF .223/5.56MM - FOR PISTOL AND SBR APPLICATIONS ONLY - ALL NFA RULES APPLY. The barrel’s twist rate is one turn in nine inches. Rock River Arms RRA 16" Midlength Complete A4 Upper .223 5.56 AR-15 (AR0375B) AR15 barreled and headspaced complete upper receiver new with full factory warranty from RRA. The monolithic receivers and handguard are made of 6061T aluminum. Rock River Arms 18" Varmint EOP Upper Half 5.56/223 with Elevated Optical Platform, Complete W/BCG. Rock River Arms AR0365BX. The direct-impingement RRAGE operates with a carbine-length gas system and features a chrome moly barrel chambered in 5.56 NATO, making it safe to fire the hotter 5.56 NATO military round, as well as commercial .223 Remington ammo. Register now AR0369B With RRA Lightweight Free Float Rail, M-LOK® Compatible. Specifications ROCKote Colors / Finishes. RRA Tactical Handle. rock river arms ar-15 varmint .223 wylde 20" upper features: caliber: .223 wylde chamber for 5.56mm and .223 caliber; upper receiver: forged a4; barrel: 20-inch air gauged stainless steel bull barrel, cryogenically treated, 1:8 twist, diameter .920 front of gas block, 1.050 under handguard 4.5 Inch A4 Upper Half .223/5.56MM. Complete Upper Halves. Learn More.204 Ruger Uppers. Caliber: Wylde Chamber for both 5.56 & .223. Shop Rock River Arms Texas .223 Wylde AR-15 Upper Half 16" Barrel Black and more from Cheaper Than Dirt! 0. Learn More Rock River Arms Coyote Carbine Upper Half 5.56/223 16" Barrel, BCG, Deluxe FF Handguard. RRA Dominator EOTech Mount. ©2016-2021 ALL RIGHTS RESERVED. CALIBER: 5.56mm NATO Chamber for 5.56mm and .223 Caliber; LOWER RECEIVER: Forged RRA LAR-15; UPPER RECEIVER: Extruded Aluminum A4 with Port Door/No Forward Assist; BARREL: Learn More We carry a large line of DPMS, Magpul, Yankee Hill, Command Arms CAA, Leapers, UTG, AccuShot, NC Star, Rock River Arms, SunDevil, Tactical Solutions, Grizzly, Stag Arms, DTI Del-Ton Inc and many others. Rock River Arms. For more information, go to www.p65warnings.ca.gov. 5.56mm NATO chamber for 5.56mm and .223 caliber, .223 WYLDE CHAMBER FOR 5.56MM AND .223 CALIBER, .223 Wylde chamber for 5.56mm and .223 caliber, .223 wylde chamber for 5.56mm and .223 caliber, WARNING: The products offered for sale on this website can expose you to chemicals which are known to the State of California Rock River Arms Predator AR-15 Fred Eichler Series 223/5.56 16" Barrel, Scope Mount. .223 Wylde Chamber for 5.56mm and .223 Caliber; UPPER RECEIVER: Forged A4 LEF-T; EJECTION PORT: Left Side; SHELL DEFLECTOR: Left Side; CHARGING HANDLE: Left-Handed; GAS BLOCK: Low Profile Gas Block; BARREL: 24-inch Air Gauged Stainless Steel Bull, 1:8 Twist, Cryogenically Treated, Diameter .920 Front of Gas Block, 1.050 Under Handguard; HANDGUARD: RRAGE Carbine LAR-15M .223/5.56. Rock River Arms AR2152 RUK-15 223 Rem 5.56x45mm NATO 4.50" 30+1 Black Black SB Tactical SBA3 Adjustable Arm Brace Stock Black Hogue Rubber Grip Handguard: RRA Deluxe Extended Modular Free Floated Handguard with 3 rails and bipod stud. Rock River Arms. ... AR0365BX 7 Inch A4 Upper Half, .223/5.56 Starting at:$500.00. Low prices on the Rock River LAR-15 Varmint A4 18" in.223/5.56 start at Champion Firearms- It's All About Accuracy. The upper is extruded in an A4 pattern, and while it has an ejection port door, there is no forward-assist feature. In stock now and ready for your lower. A3 Detachable Handle. Atlantic Firearms offers a wide variety of AR15 rifles and AR15 Upper receivers. The AR15 Rifle modular design allows you to easily switch out the upper and change calibers or configurations. Select Upper Receiver. to cause cancer, birth defects or other reproductive harm. New Customer If you would like to make a purchase with us, please take just a few seconds to register as a new customer. 223/5.56 NATO Chamber---Forged A4 Upper Receiver--- Chrome Lined 16" Wilson Barrel 1:9 Twist---Detachable Tactical Carry Handle---R-4 Handguard---A2 Flash Hider. Complete Upper Halves. Please visit your local dealer. The barrel has a 1:9-inch twist and is tipped with a standard A2 flash hider. LAR-15, LAR-8, LAR-6.8, LAR-458, LAR-9, LAR-40, LAR-47, LAR-300, LAR-15LH LEF-T, WYL-EHIDE, PRK-EHIDE, NSP, IRS, X-Series, and ROCK RIVER ARMS are registered trademarks of Rock River Arms, Inc. 5.56mm NATO chamber for 5.56mm and .223 caliber. Rock River Arms has been in the manufacturing business since 1996, making them relatively ancient for the AR world. Specifications ROCKote Colors / Finishes. Free floated upper built for distance in a tactical rifle on a milspec Rock River forged A4 upper receiver. Rock River Arms 223 Remington/5.56 NATO 308 Winchester (7.62 NATO) .458 SOCOM 5.56 x 45mm 6.8mm Remington 300 AAC Blackout/Whisper 7.62 x 39mm 9mm 450 Bushmaster 22 Long Rifle Long Guns Semi-Auto (Direct Impingement) Semi-Auto Blowback Semi-Automatic TrustLogo("https://rockriverarms.com/assets/img/positivessl_trust_seal_md_167x42.png", "CL1", "none"). Ghost Camo, 30rd Mag. Rock River Arms, Inc. offers a complete line of American made, custom built AR15 style rifles. Substitute your choice of rear sights, no charge! Shop Rock River Arms Texas .223 Wylde AR-15 Upper Half 16" Barrel Black and more from Cheaper Than Dirt! COYOTE CARBINE UPPER HALF WITH RRA LIGHTWEIGHT FREE FLOAT RAIL, M-LOK® COMPATIBLE Due to High Order Volumes, Expect Delays in Processing Orders. Rock River Arms RRAGE, Semi-automatic, 223 Rem/556NATO, 16" Barrel, 1:9 Twist, 6 Position Stock, MLOK Handguard, Black Finish, 30Rd, 1 Magazine DS1850. 5.56mm NATO chamber for 5.56mm and .223 caliber. Rock River Arms 7" A4 Pistol Upper Half Complete AR-15 223/5.56 W/BCG . AR15 parts and accessories. RRAGE 10.5 Inch Upper Half .223/5.56mm. Learn More For the Fastest Delivery, Select Express Shipping at Checkout. 0. Learn More. Brothers Mark and Chuck Larson are the owners of the Colona, Illinois based company. Rock River Arms, Inc. offers a complete line of American made, custom built AR15 style rifles. The chamber is 5.56mm NATO, so it will work fine with .223 Remington ammo, too. Entry Tactical Complete Upper. Rock River Arms, Inc. offers a complete line of American made, custom built AR15 style rifles. Mid-Length A4 Upper Half .223/5.56mm LEF-T. 5.56mm NATO chamber for 5.56mm and .223 caliber. Welcome back . For more information, go to www.p65warnings.ca.gov. WARNING: The products offered for sale on this website can expose you to chemicals which are known to the State of California However, we are not open to the public for direct sales. Even with the new 80 & 90gr high BC.224 bullets, there is still inadequate energy on target at long ranges for the caliber to be effective. Simply push the 2 lower pins out and install the new upper and you are ready to rock & roll! Buy Rock River Arms Operator upper 5.56/.223: GunBroker is the largest seller of AR15 Parts Gun Parts All: 893021738 This is the upper used in the 1 MOA accuracy rifles RRA builds. Ships directly to your door (no FFL required). Complete upper includes charging handle and bcg bolt carrier group. RRAGE 16 Inch Upper Half .223/5.56MM. to cause cancer, birth defects or other reproductive harm. Rock River Arms, Inc. offers a complete line of American made, custom built AR15 style rifles. Rock River Arms, Inc. remains open for manufacturing during the Covid-19 Pandemic. 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