Griffin M4SD Flash Comp, .223/5.56, 1/2-28, Black Nitride

The Griffin Armament M4SD Flash Compensator is a Gate-LOK-compatible muzzle device that integrates muzzle brake, compensator, and flash suppressor functions. It is designed to interface with Griffin’s M4SD series silencers and provides a sacrificial baffle to help extend suppressor service life. Constructed from 17-4 PH stainless steel with a black nitride finish, the device is intended for use on .223 Rem / 5.56 NATO platforms equipped with a 1/2-28 thread pitch. The M4SD II version achieved a 5-out-of-5 evaluation in National Tactical Officers Association testing and was awarded the NTOA Gold designation.

Key Specifications

• The thread pitch is 1/2-28 tpi.
• The interface model is Gate-LOK.
• The material is 17-4 PH stainless steel.
• The finish is Black Nitride.
• The listed caliber compatibility is .223 Rem / 5.56 NATO.
• The external diameter is 0.863 inches.
• The package includes a shim set and over-travel stop washer for mounting to a suppressor.
• The device contains two sacrificial baffles to extend suppressor life.
• The design features an ambidextrous QD mount.
• The listed weight is 2.9 ounces.

Compact and purpose-built, the M4SD Flash Compensator combines multiple muzzle functions into a single, durable unit suited for permanently attached M4-style carbine configurations and suppressed builds. Its sacrificial baffle design and robust construction make it a practical choice for shooters who prioritize durability and streamlined integration with Griffin’s Gate-LOK suppressor family.