Aero Precision M4E1 Threaded No FA Complete Upper 16" 5.56 Mid 15" M-LOK ATLAS S-ONE - Anodized Black - APAR712105M7

Aero Precision M4E1-T 16″ Mid-Length Upper Receiver w/ 15″ M-LOK ATLAS S-ONE Handguard (APAR712105M7), No Forward Ass. Loaded with tons of premium features and optimization for the ultimate AR-15 custom workshop build chambered in .223 Rem and 5.56x45mm. This complete mid-length upper set-up offers custom enhanced forged construction with M4 feedramps, front and rear Picatinny rail, port door assembly, M-LOK attachment points, A2 flash hider, and more. This upper does not include a BCG or charging handle.

M4E1 THREADED, NO FORWARD ASSIST UPPER RECEIVER FEATURES:

• No Forward Assist
• Custom enhanced forging that gives the upper receiver a “billet look” while maintaining the structural integrity of a forged part.
• Picatinny profile that blends seamlessly with our Enhanced and ATLAS Series Handguards
• M4 Feedramps
• .250 takedown pin holes

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
• 1.3″ Inside diameter
• 1.5″ Outside diameter
• Compatible with mil-spec AR15 upper receivers and barrels
• MLOK attachment points

16″ 5.56 BARREL FEATURES:

• 5.56 NATO 16″ Barrel, 1/7 twist, 4150 CrMoV, QPQ, gas port drilled
• .750 gas block journal
• Mid-length gas system, .0785 gas port
• M4 Feed Ramp Extension
• HP and MPI tested
• Standard A2 flash hider