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This complete upper includes our Slimline M-LOK Handguard! The M-LOK SL Handguard series offers unparalleled fore-end versatility for the AR15 platform. Utilize the M-LOK attachment sections to tailor your handguard setup.
Includes:
M4E1 Threaded Assembled Upper Receiver
13.5" Slimline Handguard
16" 5.56 Mid-Length Gov QPQ Barrel
Low Profile Gas Block and Mid-Length Gas Tube
Product comes assembled
This complete upper does not include BCG or Charging Handle. These items can be added separately under the Finish Your Build tab
The muzzle brake included with this complete upper receiver is NOT pinned nor welded to the barrel. Per the National Firearms Act, the muzzle brake MUST be pinned and welded to achieve the necessary 16" length as defined by the ATF for a rifle build.
M4E1 Threaded Upper Receiver Features:
New enhanced forging provides the upper receiver with a distinctive "billet look"
New picatinny profile seamlessly integrates with our Enhanced Series Handguards
M4 Feedramps
.250 takedown pin holes
Laser engraved T-marks
Includes port door and forward assist installed
Slimline 15 Handguard Features:
Full top picatinny rail for optional attachments
Full length MLOK attachment points 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
16" 5.56 Mid-Length Gov QPQ Barrel Features:
5.56 NATO 16" Midlength, 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