PCCs are Dead to Me

Where are you filming this Romania?

My 10mm banshee has beaten the shit out of the ejection port, and flaked off the coating inside of the chamber within 200 rounds of factory SIG. Cmmg customer service has been shit. Can't convince them to replace it. They just want to "repair" it.

Any suggestions for how to convice them to replace it?

I was getting a lot of the same on my CMMG radial-delayed system, all failures to eject and the spent shell getting caught up in something. Two things that seemed to help was replacing both the extractor and ejector springs with high-power versions. The ejector spring in particular gets beat up by this system and doesn't swing out the casings with the kind of authority a longer 5.56 shell gets. When I replaced it, it had become compressed and shorter than a new one. Also, do you notice when you cycle out a round it barely comes out, and sometimes will just fall down into the receiver…whereas a 5.56 round or shell will be flung way out?

It would seem that the ejector spring will last about 1000-1500 rounds before it starts to set and weaken, which isn't a lot but I keep several handy. That's the one major niggle I have with this design, in that they should have incorporated a fixed ejector in the receiver that aggressively knocks the casing out like just about every other pistol caliber gun, instead of the internal rod type in an AR bolt which just pushes one side of the casing to swing a longer case with more centrifugal force helping it fling away. This system seems to depend more on luck that the spent casing will tumble its way out. And the more that ejector spring wears, the more likely it won't make it out.

Bolt distance is too long for short round?

I've built 4 9mm PCC – 2 rifle length, 1 pistol, 1 SBR. I prefer the KAK drop in colt mag converter, ASC colt mags, Ballistic Advantage Gen 2 9mm barrel. Blow back poor race but they chug along and you can tune them to your liking and problem solve them pretty quickly once built. Blowback9 has great tips on how to get them running solid. I just added his gentle recoil solution and it really tamed my SBR with the suppressor in recoil.

my foxtrot fm9 feeds anything i put thru it minus hollows

Lol my psa has a binary and works way better. Also a 9mm ar contraption 😅

Was excited for the dissent but seeing problems with this gun I don’t want to gamble on a 2k platform

New camera set up is fire

Maybe stop believing that DI AR9’s will work and you’ll be good 😎

Looks pretty gray to me 😬

if he was green he would 💀

The Eotech is likely causing the stove pipes you are suffering with the CMMG and possibly some others. The wide body of the optic covers too much of the ejection port on certain receivers, effecting the path of the spent case and cratering the reliability.

Good God. Even my eye comfort shield doesn't fix this. Bruuhhhh

That’s what you get with cmmg

I'm don't like this. I will not be subscribing. I will tell YT not to recommend your videos.

Man I've seen so many content creators have trouble with cmmg I appreciate you guys going through that cuz I'm going to save my money. I was considering a decent but after this and then tactical considerations his experience with The descent 47 was insane

Sounds like a skill issue Mister War hero.

I have a pair of ruger pc9. We mostly use ets and magpul mags and whatever ammo is cheap. Havent had an issue.

Cmmg banshee with endomag AR15 pmag conversion kit has been 100% reliable for me. 🤷‍♂️maybe it’s the pistol mags giving the issues. That seems to be the common denominator based on other comments

The blue joke isn’t funny but I know someone you can talk to about that!

like clint smith said, "either have a pistol or a rifle stop trying to dick around in between"

Is this TREX arms why is everything blue ?

You might try playing with buffer weight. Think of it like how AR10s are finnicky when extremely overgassed. Might be the same issue here. I have the Banshee 9mm that has run thousands of rounds. Using the Pmag conversion mags and a 7.3 ounce buffer with a flatwire spring. Not a single malfunction🤷‍♂️

Awe why so blue

Buy a b & t chassis for a glock, or a recover tactical brace, they are nice for little pdw backpack guns.

I've built 20+ 9mm PCCs over the years. All had issues. The one I settled on was the Aero Precision EPC-9 with a 4.5" Ballistic Advantage Gen 2 barrel. It eats every type of ammo, zero malfunctions well past 5K rounds. Check'em out man.

Stribog SP9A1 is rock solid. I bought one when they first dropped. I’m about 20,000 down on it and use it a lot for night shooting and have run it primarily suppressed. Solid weapon system.

The only pcc I’ve ever had that ran flawless no matter what is the last one we would all expect. A chiappa Pak9 with a binary in it. 5300 rounds, never skips a beat right out of the box. I can not say the same for ar platform pcc. Even with much tuning my ar9 is only 98%

Get yourself one of them GSG-MP40s, swap out the cocking handle and you’re good to go. 1/3 the price of the banshee and you can sorta pimp it out how you want.

Glock mags are for Glock pistols. Colt and CZ mags are for PCCs.

Take off that EOTech, BUIS and the tac light—> then throw that thing in the trash. 😅

Funny how other big influencers never talk about banshee problems.

All of those Glock mag fed 9mm ARs are garbage. Get purpose built 9mms. AKVs, MP5s, TPSs, the B&Ts. Mags built for the intended gun. PCCs should be a true duel feed. Not a double to single feed mag.

Why are you blue?

I purchased a Olympic Arms 9mm back in 1997. It uses modified sten mags and reliable. I do not shoot it much any more for the same reason I do not shoot a super soaker.

Gun seems over-gassed.
I have a ruger lc charger in 5.7mm and it is AWESOME.
Light and you can put some hurt on a bad guy because it has no recoil.

It's called… Uzi pro… You're welcome.

I have a Cmmg 9mm banshee and understand what you’re going through.

It’s the ammo you’re using. You need higher pressure rounds.

Trench why not an sp5 or sp5k pdw ?

Been considering the PSA AR-9 anyone review it?

Now that's an honest review

In my experience. And mine only. Ar Glock mag based carbines need extra power mag springs. Midway sells them. Brownells has em.
They get dirty fast and start to choke after 5-6. 30 round mags.

As a side note don’t buy a cmmg unless it’s 7.62×39.

Is it for sure not the eotech bouncing ejected rounds back in chamber? Cant tell.