5.56 NATO chamber

16” Barrel with 1:8 twist rate

Nitride finish

A2 flash hider

Carbine length gas system

12” free float handguard

M-LOK attachment slots

7075-T6 aluminum forged receiver

Hardcoat anodized black finish

This American Tactical Barreled AR-15 Upper Receiver Group is chambered in 5.56 NATO and an M4 profile. With a 16” barrel and 1:8 twist rate, sending 55 grain projectiles down range and getting small groups has never been easier. The carbine length gas system is the ultimate in reliability to keep your rifle running in adverse conditions. Protecting the low profile gas block is a 12” free float handguard with M-LOK slots for attaching grips, lights, and other accessories. This upper does not include a charging handle or BCG.The Mil-Spec upper receiver is forged from 7075-T6 aluminum with a hardcoat anodized finish and comes with a forward assist and dust cover already installed. The full length picatinny top rail is perfect for optics and back up iron sights.American Tactical Inc. is a worldwide importer of firearms, ammunition and tactical equipment to the United States of America. While a relative newcomer to the firearms industry, ATI has established a reputation for many high-quality products.