Aero Precision M4E1 .300Blk 10" URG w/ ATLAS S-One 9" Handguard

In stock
as of 07/22/2024 3:17AM CST
Store Inventory
Available Online5
Fountain Valley, CAOut of stock
The Colony, TX5
MPN: APAR700302M4
UPC: 840014601745

All NFA rules apply.

Inter-Store Transfer

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The M4E1 upper receiver group uses an M4E1 upper receiver, 10.5" barrel, ATLAS S-ONE M-LOK handguard, anodize black finish and chambered in .300 BlackOut.
*Does not include BCG or charging handle.

Fits Mil-Spec AR-15 lower receivers. *NFA Rules Apply

Caliber .300 BlackOut
Gas System Direct Impingement, Pistol Length
Barrel Length 10.5"
Barrel Type 4150 CMV
Twist 1:7
Muzzle 5/8-24, A2 Flash Hider
Upper Receiver M4E1
Handguard ATLAS S-ONE, M-LOK, 9"
Finish Black Anodized


M4E1 Threaded Assembled Upper Receiver
ATLAS S-ONE Handguard of choice
10" .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.
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
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
Compatible with mil-spec AR15 upper receivers and barrels
M-LOK Compatibility
Length: 10"
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: .0935
Gas System Length: Pistol
Weight: 21oz
M4 Barrel Extension
HP and MPI Tested

All NFA rules apply.

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