Preface

The Mk3 rifle series from CMMG is based on a 308 Winchester sized AR action, allowing for similar cartridges like the 6.5 Creedmoor as well. Much of the same features of CMMG’s smaller rifles are built into the Mk3 making it familiar and simple to operate. Today we are taking a look at the CMMG Mk3 308 Winchester rifle, to see how it compares to other similar rifles I’ve shot. Based on my experience with other CMMG products I was expecting some great results.

The CMMG MK3

If you go to CMMG’s website, you will find a variety of MK3 rifles from their various lines. There are four different lines that all include MK3 variants, there is the Dissent line of which I am a big fan. The Dissent uses a buffer inside the upper receiver which means you no longer need a buffer tube opening the doors to a bunch of new stock options.

The Banshee line of firearms is mostly pistol and SBR type personal defense firearms, with shorter barrel lengths and appropriate accessories. The Resolute rifles offer rifle lengths and accessories for longer engagements. And lastly the Endeavor line of rifles which feature more of a marksman configuration built for long-range.

There is a MK3 version of all these rifles that you can select based on your needs. The rifle we are testing today is a slightly older MK3 that came out before these more modern lines from CMMG. While still based on the CMMG MK3 receiver set, this rifle features different furniture and handguard.

Outfitting the MK3

I wanted to see what this rifle was capable of, so I put a US Optics TXH 3-18×50 riflescope on it using a Zro Delta cantilever scope mount. With a 3-18 it would do well shooting targets at relatively close distances, and with a max of 18X it would also be suitable for distances at the end of the 308 Winchester’s envelope.

I grabbed a few different types of ammunition to test in the rifle, some PPU 150 grain ball ammo, as well as some 175 grain DTM match. I also grabbed a small tripod with a saddle to support the rifle for precision shooting.

I also wanted to see how the rifle faired as a suppressor host, so I grabbed my YHM R9 suppressor. It has never done me wrong when testing 308 chambered rifles, and now it was time to try it on the MK3.

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Again, CMMG’s current production Mk3s have significantly better features like improved charging handles, triggers, and other controls. I have several new CMMGs that prove the company has stepped up its game significantly. Upgraded handguards and furniture are coupled with handsome Cerakote finishes and M-LOK handguards, while features like CMMG’s muzzle devices also improve the look and performance.