Description
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 oclock 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
WHATS IN THE BOX?
M4E1 Threaded Upper Receiver, No Forward Assist
15 ATLAS S-ONE Handguard
16 5.56 CMV Barrel
Low Profile Gas Block and Mid-Length Gas Tube
Port Door Assembly
A2 Flash Hider
This complete upper receiver does not include BCG or Charging Handle.


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