The CMMG Resolute MK4 .350 Legend Upper Receiver features an 16.1" 1:16 twist barrel. The MK4 comes with a CMMG ZEROED Muzzle Brake, CMMG ZEROED Ambi Charging Handle, CMMG Bolt Carrier Group, and a EML15 15" M-LOK Free Float handguard.
| Barrel | 16.1" 1:16 twist medium taper 4140 Chromoly with Black Salt Bath Nitride finish |
| Caliber | .350 Legend |
| Handguard | EML15 15" M-LOK Free Float Handguard |
| Sight | None |
| Muzzle Device | CMMG ZEROED Muzzle Brake |
| Charging Handle | CMMG ZEROED Ambi |
| Bolt Carrier Group | CMMG |
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Wow
I must say that I was skeptical to say the least about making this purchase. I received this pretty quickly and customer service is Great! The upper came as expected with a good protection layer of thicker oil where needed. Cleaned up nice and easy, and looks beautiful. I've been testing it for a month steady now sending a couple hundred rounds of several different types of 350 legend ammo through it, totaling 1,200 rounds fired. I was shocked that I never had one failure! I'm so happy with it's performance that I'm taking it deer hunting this season. I highly recommend this product.
