This complete upper includes our Minimal Optical Deflection (MOD) 4 Handguard. The MOD 4 handguard seamlessly blends robust construction with an ergonomic form factor, ensuring no compromises between the two. Machined from 6061-T6 aluminum, the handguard is engineered with a focus on stiffness to drastically reduce deflection under load. It attaches to the upper receiver via a steel barrel nut, which also serves to significantly reduce point-of-impact shift when using an infrared laser aiming device under load.
A 7 sided M-LOK interface allows the user to customize their handguard to their exact specifications and needs. Lastly, each of the 4 QD sockets on the MOD 4 utilize a steel liner to ensure a higher shear load and longer service life with the continued use of QD swivels.
INCLUDES:
M4E1 Threaded Assembled Upper Receiver
MOD 4 11.4" Handguard
12.5" 5.56 Carbine-Length Barrel
Low Profile Gas Block and Gas Tube
Product comes assembled
Optional:
Need a BCG and Charging handle® Use the dropdown to purchase this upper receiver with a mil spec chrome phosphate BCG and BREACH ambidextrous charging handle!
Breach Charging Handle Features (Optional) :
Ambidextrous Controls: Ergonomically designed 7075 Aluminum levers allow the user to easily charge their firearm with either hand, while remaining low profile and comfortable when slung.
Robust Construction: Reduced chamfer angles on the 7075 Aluminum reinforced bar design provide a strong foundation for the BREACH® that is resistant to rotational flex or breakage.
Patent-pending Lever Mechanism: Transfers force-of-use away from the roll pins and into the top/head portion of the reinforced bar protecting the charging handle in the most demanding circumstances.
Gas Deflection Shelf: Aligns with the upper receiver to redirect gas flow away from the users face when shooting suppressed.
Functional Design: It is not all just good looks. Stylistic cuts on the charging handle also help to clear stuck on carbon and debris from the upper receiver, while the spacer design seals and protects the lever mechanism from debris.
Phosphate 5.56 BCG Features (Optional) :
M16-cut carrier
Machined from 8620 steel
Carrier has forward assist serrations
Mil-Spec phosphate coating
Properly staked gas key
Chrome lined gas key and bolt channel
5.56 Bolt is machined from Carpenter 158 tool steel
Shot peened
HPT tested/MPI marked
Black o-ring insert on extractor
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
MOD 4 HANDGUARD FEATURES:
Full top picatinny rail for optional attachments
Quick disconnect sling socket at the 3, 6 and 9 o'clock positions
Compatible with low profile gas blocks
1.2" Inside diameter
1.5" Outside diameter
Compatible with mil-spec AR15 upper receivers and barrels
12.5" 5.56 CARBINE-LENGTH BARREL FEATURES:
5.56x45mm NATO
QPQ Finish
Gov Profile
.750" gas block journal
Carbine-Length Gas System
1/7 Twist Rate
M4 Feed Ramp Extension
HP and MPI Tested
Standard A2 Flash Hider