Promag 9/22 feed issues RESOLVED

[Plink]

Just a quick note to those who are experiencing issues with the new Promag mags.
The two I purchased turned my 10/22 into a jamomatic with extraction issues and stovepipes, so I decided to figure out what the issue was.


I used a sharpie marker on the bottom of the bolt to determine where it was contacting the mag lips. Put in a mag and cycled it a few times, checked the bolt and saw that there was quite a bit of the marker ink rubbed off on the right side of the bolt.
I pulled the gun apart and proceeded to dremel that part of the bolt with a semi-course wheel. Don't take off TOO much. Then I polished the bolt to a nice shiny finish again.

Put the gun back together and did a function test with 20 rounds.

Not a single issue.

Obviously, you will need to tailor how much you need to grind off / polish up for your individual bolt, but this seems to do the trick.

Also tested with my TI25 mags and they still function perfect as well.


Just a little FYI for you guys, hope the info helps.

 

[bjs7293]

It seems to me that removal of material from the bolt is inviting problems if to much material is removed from the bolt. Why not remove the material from the mag lips that are causing the problem. The mag lips are replaceable for a small cost compared to the cost of the bolt. I have four mags, out of the four I have one that has problems, will have to look at your idea.......

 

[Plink]

I probably removed 1 thou of the bolt, not enough to cause concern. That, and the polishing gave it just enough clearance to make it function properly.

 

[Kryogen]

I personally would have removed it off the mag.... but thats just me.
I wouldnt grind my bolt.