Black Dog mags not working out...

[OC_Gunner]

Picked up two black dog mags at LGS, guy behind the counter ensured me they would work in my CMMG upper/NFA lower rifle. With both mags, at least one round feeds into the bolt carrier vertically which obviously causes a jam that requires pliers to remove.

Am I doing something wrong or is it not meant to be? For the record, the same ammo feeds flawlessly using te CMMG evolution mag that I bought last year with the upper.

[2DoorImpala]

Feed lips, might want to check the gap measurement

[uxo2]

what model of mags

BD has a few generations.

Pics please.

I run BDs in my Plum crazy Lower.
Pre NFA but same..

No isssues .

[OC_Gunner]

Here is a link to the same mags I bought:

http://www.riflegear.com/p-1512-black-dog-x-form-magazine-10-round-with-steel-feed-lips.aspx

Website says new x form 4th gen with steel feed lips.

I didn't take a pic of the jam but I bet I could replicate it later with dummy rounds and snap a pic.

[uxo2]

That is strange.
Those are their newest mags.
Call blackdog.
They are pretty good on cutomer service.

[bollero]

Those new mags work fine in my AR with 22lr ceiner convertion..

[G21Shooter]

I have never had a problem with Blackdog mags with my CMMG .22 lr upper. I do only use the steel lip ones, though.

I would contact Blackdog

[Jet Setter]

Blackdog Mags are fantastic. You probably have a follower issue. Call Blackdog and let them know what is going on. They will send you different followers for free. They have great service and will take care of you.

[Casual_Shooter]

FWIW- I bought a couple of used Black Dog .22lr mags for my CMMG .22lr upper. First 5-6 rounds would feed no problem. Then it would jam just like you describe.

I figured it was because the mags were used (and a little abused)- followers would catch a bit at the top etc. Although mine are slightly different than the ones in the link above. I believe mine have plastic feed lips.

Looking forward to what you find out.

[jchen76@gmail.com]

The plastic lips will expand over time. Happened to my BDM mags. Go with the metal lipped versions and you are good to go.

[OC_Gunner]

OK I will call black dog and see what they say.

[uxo2]

I have afew 1st gen BDs and never
have had feedlip issues.


You probly got the ones the QC was sleeping.

[3RDGEARGRNDRR]

I only run black dog. Metal and plastic feed lips. No issues w/ 8 mags all different types of black dog.
I had an early issue of my cmmg feeding vertically. I solved the problem by buzzing and polishing the feed ramp and chamber. No ftc now.

[Tom-ADC]

The Spikes upper I just bought comes with one and I just ordered a few more to use with it.

[kkp]

Does anyone make 10 round conversion kits so new hicap rebuild kits can be built into 10 round mags?