MMR-556-U

Our MMR-556 uppers come ready to install on the lower of your choice. These uppers ship complete with our M16 cut nitride bolt carrier group, and GI charging handle. The MMR-556-U utilizes a 16” mid-length Ballistic Advantage 1:7 twist nitride barrel, and features our 15” Custombilt MLOK rail. These uppers are ready to shoot!

Original price was: $828.00.Current price is: $778.00.

Sale!

Forged Upper Receiver:

• 7075-T6 Forged Aluminum

• T-Marked Flat-Top with Picatinny Rails

• Hard-Coat Anodized Mil 8625 Type 3 Class 2 – Matte Black

• Mil-Spec Charging Handle

Handguard:

•Custombilt 15” MLOK handguard,Hard-Coat Anodized Mil 8625 Type 3 Class 2 – Matte Black

Barrel (1:7 twist)

• 16″

• 4150 Chrome Moly Vanadium

• Nitride/QPQ Finish

• Thread: 1/2 x 28

• A2 Flash Hider

• Low profile 4140 nitride gas block

• Mid- Length Gas System

Custombilt M16 Bolt Carrier Group:

• Properly staked gas key

• Nitride Coated

• Laser Engraved Custombilt Logo

• HPT – High Pressure Tested

• MPI – Magnetic Particle Inspected

• 9130 Bolt

• 8620 Bolt Carrier