M4E1 THREADED COMPLETE UPPER, 20" 5.56 RIFLE LENGTH BARREL, 15" M-LOK ATLAS S-ONE HANDGUARD - FDE CERAKOTE

Aero Precision APAR700315M48: This complete upper includes Aero Precision's new ATLAS S-ONE Handguard! The S-ONE line of handguards are designed with size and weight in mind, providing the perfect addition to your lightweight build. Aero Precision's proprietary ATLAS attachment system is a durable and dependable mounting platform, maintaining a slim profile while still providing the strength and stability customers have grown to love from Aero Precision handguards.

Includes:
M4E1 Threaded Assembled Upper Receiver
15" ATLAS S-ONE Handguard
20" 5.56 Rifle Length CMV Barrel
Low Profile Gas Block and Rifle Length Gas Tube
Product comes assembled
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
1.3” Inside diameter
1.5” Outside diameter
Compatible with mil-spec AR15 upper receivers and barrels
20" 5.56 Rifle Length CMV Barrel Features:
5.56 NATO 20" Rifle Length, 1/7 twist, 4150 CrMoV, QPQ, gas port drilled
.750 gas block journal
Government Profile
Rifle length gas system, .0785 gas port
M4 Feed Ramp Extension
HP and MPI tested
Standard A2 flash hider