The CMMG Resolute Mk4 chambered in 300 BLK is designed for shooters who want a compact rifle-length platform that accommodates both supersonic and subsonic loadings. It is well suited for range use and defensive applications where a shorter overall length and compatibility with common AR-15 parts are desired.

This Resolute Mk4 is built on CMMG’s Mk4 AR-15 platform and delivers a balanced combination of modern ergonomics and modularity. The rifle is finished in black and is fitted with CMMG’s EML 15 handguard, providing M-LOK attachment points and a reduced-weight profile while retaining mounting options on top and at the 3, 6, and 9 o’clock positions.

Key Specifications

The caliber is 300 BLK.
The original barrel length is 14.5 inches, with the ZEROED SVD Brake pinned and welded to bring the overall barrel length to 16.1 inches.
The rifle is built on the Mk4 AR-15 platform.
The handguard model is the EML 15 with M-LOK slots on the sides, bottom, and between top Picatinny rail sections.
The rifle includes ZEROED parts including a drop-in trigger and Magpul 30rd PMAG.
The included controls feature 60/90 degree ambidextrous safety, ambidextrous mag catch, and an ambidextrous charging handle.
The rifle includes a ZEROED SVD Brake that is pinned and welded.
The furniture includes CMMG’s RIPSTOCK and a polymer dust cover.
The exterior finish is black.

The CMMG Resolute Mk4 300 BLK combines modular AR-15 compatibility with a compact, rifle-length profile and modern accessory mounting options. Buy the CMMG Resolute Mk4 300 BLK online today for a versatile 300 BLK rifle that fits range and defensive needs.