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Rock River Arms AR-15 Varmint Upper .223 Rem./5.56 NATO 20" 1:8 Barrel Black Free Floating Handguard

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Rock River Arms, Inc.
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Rock River Arms AR-15, Varmint Upper, .223 Rem./5.56 NATO, 20" 1:8 Barrel, Black, Free Floating Handguard.

The Rock River Arms 20" Varmint A4 Complete Upper Half is ready to turn your AR carbine or rifle into a tack-driving, bull barreled precision rifle rig! This complete upper comes with bolt, bolt carrier and charging handle and is ready to go with a .223 Wylde chamber for both 5.56mm and .223 rounds. The upper receiver is a forged A4 type flat-top, the handguard is Rock River's Aluminum Free Float tube, and the barrel is an air-gauged stainless steel bull barrel with a 1:8 twist, perfect for longer bullets and long range shootin'!

Barrel diameter is .920" under the picatinny rail gas block, which is RRA's Varmint Gas Block Sight Base.

Made in the USA by Rock River Arms. 
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