Range Report: CMMG Mk4 Dissent (.300 Blackout) – A compact AR-15 style pistol

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Just saw one at the gun show for 13 bens…. if it had longer barrel (pretty sure it was 6.5) it would be in my hands right now.

Update on this gun:
Jayson found a missing c-clip on one of the bolt carrier guide rods. It seems that was causing some alignment issues with the bolt since the tension was not balanced between the two guide rods.
After replacing the bolt carrier rods with ones that had the clip, the gun is now feeding reliably.
I also had issue with burrs from the factory before it was provided to Jayson.
I have heard of other quality control issues with CMMG. It is a wonderful gun, but I think they have some room to improve.

Jayson, thanks for the review and for finding that problem. My faith in this guns reliability is back after some sour feelings toward it.

I have the 10.5 inch barrel same color

I use a bipod on my AR pistols to bench shoot them works the best, then maybe a tripod for a second best

I’ve had mine for 6 months got about 1300rds no malfunctions through it and love it 🔥🔥 I BELIEVE THATS A TRIGGER TECH TRIGGER THATS IN THESE.

Love my dissent, my favorite.

Is that charging handle reciprocating? I like those. I'm actually eyeballing their 7.62×39 Mutant

What brace is that ?

I wish you would’ve tried taking one round out of the magazine to see if it still would not go into battery. It very well could be the magazine, not the gun. That would’ve been the first thing I checked.

I don’t think you’re giving the gun a chance to be accurate when you rested it on the magazine. Plus taking your time between shots would help also. I have one of these guns and I promise you it’s a hell of a lot more accurate than what you’re showing.

I just bought the same 300 blackout… havent had a chance to take it out the rsnge just yet….. but, love the ergos….

Was that a partial out of battery detonation at 17:54?

Finally, I’ve been waiting for more reviews on this gun, that’s where you start to see the imperfections of the platform. But I will say, I haven’t had any issues with it not going into battery yet. Thanks for the review!

Can you not use the forward charging handle as a forward assist by just hitting it forward or does it not put any pressure on the carrier group?

Were the failures to go into battery using .300 BO magpul mags that were fully loaded or were they the standard Gen 2/3 mags?

with the gov trying to ban ar i wish people would stop labeling bufferless weapons as ar

It's a little pricey for an updated AR 18.
I must admit I don't need the controls on the wrong side. Lol

Living in NJ can not have folding stock so picked up resolute

Sorry, Jason. I fell asleep at the 23:57 mark. Boring …no. The time change really affected me! Back for the rest of the video!

I love the new looks of the CMMG offering. I was eyeballing the Resolute, and so close,I got my hand on the wallet, too. But, no forward assist is the reason I decided not to buy it. And now I see I made a very good decision. They should made the forward assist a option.

Cool filming angle in that opening. Well done!

I have the 9mm Banshee (8")… GOnna pass on the Dissent. Have seen a few folks now have issues. Prefer to wait for the company to iron out their issues.

Trying to keep my cool right now moms being transferred from hospital to nursing home today as we speak shes terrified and my aunt and sister decided to yell at her and make her cry the old me would have set them on fire but im really trying to be civil about this for my mother's sake

Good morning, Jason, that ticks a lot of boxes for me. I love 300Blackout and that short little unit would look great with a drum mag, then on the front seat of my ute. The rabbits are getting really bad, so it would get a workout. Five Roo review 🦘🦘🦘🦘🦘 Oops, I just realized that its super accurate as well, I hope you picked up the brass, I have one of my Dillons setup for 300Blackout, brilliant round. Cheers