Custombilt Firearms MFG MMRB-556 5.56 NATO Rifle - 16"

The MMRB rifle combines modern features with classic lines. The MMRB-556 contains the same components as the MMR-556, but incorporates an F marked front sight block, and Magpul Industries MLOK SL handguard. This combination results in a slightly more cost effective rifle that is still suited for extremely hard use. 

At the heart of their rifles, Custombilt use their M16 cut nitride bolt carrier group, matched with a fully nitrided Ballistic Advantage 16” mid-length barrel. Their mid-length gas system provides an extremely soft and controllable recoil impulse. 

Custombilt's MPP-GI trigger has micro polished contact surfaces, and a fitted disconnector. This combination gives you the 5lb weight of a typical duty trigger, and removes all of the gritty drag while breaking the shot. Their fitted disconnector gives a positive, short reset that is hard to miss!

Forged Lower Receiver:

• 7075-T6 Forged Aluminum
• Hard-Coat Anodized Mil 8625 Type 3 Class 2 - Matte Black
• Upper Receiver Tension Screw with nylon tip to remove any slack between lower and upper receiver.
• Detent Set Screw for rear take-down pin (captures spring that is normally held in by the end plate.)
• Bolt Catch Screw (Used in place of the Bolt Catch roll pin)
• Custombilt MPP Trigger: (Micro Polished Performance) GI Trigger
• Custombilt Enhanced Trigger Guard
• 6-Position Mil-Spec Buffer Tube, Carbine Buffer, Stainless Steel Spring
• Magpul CTR Stock
• Magpul MOE Grip
• Mil-Spec Safety Selector
• 30 round magazine

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:

• Magpul SL Handguard

Barrel (1:7 twist)

• 16"
• 4150 Chrome Moly Vanadium
• Nitride/QPQ Finish
• Thread: 1/2 x 28
• A2 Flash Hider
• Pinned Front Sight 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

Weight: 6.45 lbs

Includes: (1) Lancer 30rd Magazine