M4E1 Threaded 18" 6.5 Grendel Complete Upper Receiver w/ ATLAS S-ONE Handguard

Upgrade the performance of your AR15 build with this 6.5 Grendel Complete Upper Receiver. Designed to be a low recoil/high accuracy cartridge, the 6.5 Grendel is ideal for those looking to stretch the legs of their AR15 rifle, with proven results at 1000+ yards. The 6.5 Grendel is designed on the AR15 platform. You will need to purchase a 6.5 Grendel specific bolt carrier group (available now) and magazine (not currently offered - coming soon). All other components are standard to the AR15 platform. This upper assembly does not include a BCG or Charging Handle. Includes: M4E1 Threaded Assembled Upper Receiver ATLAS S-ONE Handguard of choice 6.5 Grendel 18" Stainless Steel, Rifle Length Barrel .750 Low Profile Gas Block and Rifle Length Gas Tube A2-style Flash Hider Product comes assembled The 6.5 Grendel is designed on the AR15 platform. You will need to purchase a 6.5 Grendel specific bolt and magazine. All other components are standard to the AR15 platform. This upper assembly DOES NOT include a BCG or Charging Handle. M4E1 Threaded Upper Receiver Features: New enhanced forging that gives the upper receiver a "billet look" New picatinny profile that blends seamlessly with our Enhanced Series Handguards M4 Feedramps .250 takedown pin holes Laser engraved T-marks Includes port door and forward assist installed ATLAS S-ONE Handguard Features: Front and rear picatinny rail Eliminated center of top rail for weight reduction Indexing grooves in 12:00 position for positive grip control Quick disconnect sling socket at the 3, 6 and 9 o'clock positions Compatible with low profile gas blocks 1.3AA�A� Inside diameter 1.5AA�A� Outside diameter Compatible with mil-spec AR15 upper receivers and barrels Learn More about our NEW ATLAS S-ONE Hanguards 6.5 Grendel 18" Stainless Steel, Rifle Length Barrel Features: 6.5 Grendel 18" Rifle Length Barrel 416R Stainless Steel finish 1/8 twist 5/8x24 Threaded Pitch SPR Profile .750 gas block journal Rifle length gas system M4 Feed Ramp Extension HP and MPI tested