Cmmg kit woes

[805thRCTank]

[SharedShots]

The BCA upper uses the CMMG magazine for 22LR so it should work in both. Are you using the magazine that came with the conversion kit or the one supplied with the BCA upper?

Hearsay only but the Ciener mags sound like they work better with the CMMG conversion.

https://gunmagwarehouse.com/cmmg-ar-15-22lr-conversion-ciener-10-round-magazine.html

I'm not sure what ships with the CMMG kit, is it the same one as in the link? Maybe try the Blackdog mags?

Just guesses on my part which isn't a good way to go but it's rimfire and I've seen two different magazines from the same manufacturer with one working flawlessly and another not feeding anything but one brand/type of ammo.

[FeuerFrei]

Does the mag wobble when locked in? If so, the word around the campfire is that an adapter is used w/shim to keep things tight/straight so the rounds stay lined up to the breech. (catch22 adapter)

Some campfire discussion here... https://www.rimfirecentral.com/threa...ppers.1235279/

[805thRCTank]

The BCA upper uses the CMMG magazine for 22LR so it should work in both. Are you using the magazine that came with the conversion kit or the one supplied with the BCA upper?

Using the mags that come with the conversion kit.

[805thRCTank]

Does the mag wobble when locked in?

[M76]

Black Dog mags FTW

[FeuerFrei]

Yes, it indeed wobbles. But it’s not an issue with the BCA upper when I took it out. The BCA upper suffers from occasional stovepipes but that is a different story…

Very strange. But thanks for that link. Still all ears for other opinions

K.

Are the bullets getting damaged or just the case? If it's the bullet then my money says it's the magazine you're using. If it wobbles then try holding onto the mag when firing it and see if pressure on the mag changes things. Fore/aft/port/starboard/up/down and combos. Fire while alternating. Look for a pattern.

My old Ciener kit runs great in all of my AR clones and the best mags I've tried besides the oem are Black Dog already mentioned. Try the pressure test on the mag first and or try another mag if possible

*BD mags don't wobble in any or my clones.

[coq]

Maybe unrelated, but worth mentioning...I have a CMMG upper that runs perfectly with Federal, but won't feed CCI Mini Mags properly. I assume it's due to the shape of the bullet, and it just doesn't like those short, blunt ones.

[805thRCTank]

Maybe unrelated, but worth mentioning...I have a CMMG upper that runs perfectly with Federal, but won't feed CCI Mini Mags properly. I assume it's due to the shape of the bullet, and it just doesn't like those short, blunt ones.

Been trying to feed it with Fiocchi HV with no success. Imma try with Aguila HV next since I just consumed my Federal HV brick before fiddling with the cmmg kit.

[805thRCTank]

K.

Are the bullets getting damaged or just the case? If it's the bullet then my money says it's the magazine you're using. If it wobbles then try holding onto the mag when firing it and see if pressure on the mag changes things. Fore/aft/port/starboard/up/down and combos. Fire while alternating. Look for a pattern.

My old Ciener kit runs great in all of my AR clones and the best mags I've tried besides the oem are Black Dog already mentioned. Try the pressure test on the mag first and or try another mag if possible

*BD mags don't wobble in any or my clones.

[805thRCTank]