Aero Precision 8" .300 BLK Complete Upper No Forward Assist ATLAS R-ONE 7" M-LOK Black

Aero Precision 8" .300 BLK Complete Upper w/ No Forward Assist & M-LOK ATLAS R-ONE Handguard - Black This AR-15 Complete Upper Receiver, paired with the ATLAS R-ONE handguard streamlines the appearance of your next AR-15 build by removing the Forward Assist. By combining our lightest handguards and barrel profiles with the No Forward Assist Upper Receiver you can maximize the weight savings for your next build. Includes: AR15 Assembled Upper Receiver with Forward Assist 7" M-LOK ATLAS R-ONE Handguard 8" .300 Blackout CMV Barrel Low Profile Gas Block and Pistol Length Gas Tube Product comes assembled This complete upper does not include BCG or Charging Handle. These products may be selected as add-ons under the FINISH YOUR BUILD tab The muzzle brake that comes with this complete upper receiver is NOT pinned nor welded to this barrel. AR15 Upper Receiver with Forward Assist Features: M4 Feedramps .250 takedown pin holes Laser engraved T-marks No forward assist provisions Port door installed ATLAS R-ONE Handguard Features: Full top picatinny rail for optional attachments Quick disconnect sling socket at the 3, 6 and 9 o'clock positions Compatible with low profile gas blocks 1.3" Inside diameter 1.5" Outside diameter Compatible with mil-spec AR15 upper receivers and barrels 8" .300 Blackout Barrel Features: Length: 8" Twist: 1 in 7 Muzzle: 5/8x24 Threaded Material: 4150 Crome Moly Vanadium Finish: QPQ corrosion resistant finish both inside and out Gas Block: .750 Gas Port: .109 Gas System Length: Pistol Weight: 18oz M4 Barrel Extension HP and MPI Tested