***These barreled uppers are built and test fired by Aero Precision using all of their parts. They ship in the Aero Precision boxes that we received them in.

20" Aero Precision M4E1 Threaded 6.5 Grendel Complete Upper Receiver w/ 15" M-LOK ATLAS S-ONE - Anodized Black (w/ BCG, Charging Handle & VG6 Gamma 762)
Product #: APSL100020

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.

***This upper assembly INCLUDES a BCG, Charging Handle and a has a VG6 Precision Gamma muzzle device!

• M4E1 Threaded Assembled Upper Receiver
• 15" M-LOK ATLAS S-ONE Handguard
• 20" 6.5 Grendel Stainless Steel Barrel
• .750 Low Profile Gas Block and Gas Tube
• VG6 Gamma 762
• 6.5 Grendel Bolt Carrier Group, Complete - Black Nitride
• AR15 Charging Handle
• Product comes assembled
• The 6.5 Grendel is designed on the AR15 platform. All other components are standard to the AR15 platform.

• New enhanced forging that gives the upper receiver a "billet look"
• New picatinny profile that blends seamlessly with ATLAS Series Handguards
• M4 Feedramps
• .250 takedown pin holes
• Laser engraved T-marks
• Includes threaded forward assist roll pin
• Includes port door and forward assist

• 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
• 1.3” Inside diameter
• 1.5” Outside diameter

• 20" 6.5 Grendel Rifle Barrel
• 416R Stainless Steel finish
• 1/8 twist
• 5/8x24 Threaded Pitch
• .750 gas block journal
• Rifle gas system
• M4 Feed Ramp Extension
• HP and MPI tested