So I finished a pistol build (future SBR) and I go to put a mag in it and it's tight as hell!!!! I can put the mag in but it needs a pretty good slap on the bottom to fully seat and lock in the mag and then when the mag release is pressed it does not drop free even being fully loaded. I can pull it out by hand but I'm use to mags dropping free from my rifles. I have a lot of money tied up into this build and I am not sure what to do to solve this problem any suggestions?
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Tight magwell
- Thread starter pistolpat
- Start date
Sub'd.
Same issue here but I used a forged lower. Thought that may be the issue on mine.
Same issue here but I used a forged lower. Thought that may be the issue on mine.
If you're using Magpul or other polymer mags, try the old aluminum or steel mags. They seem to be just a hair smaller.
Gen 3 Pmag?
Find the high spots with a metal mag covered with candle soot or similar substance. Then take a flat piece of wood with emory cloth and very carefully bring down the high spots. Don't remove too much material as it will wear with use.
I have had that problem in tighter mag wells with Thermold and out of spec or beat up GI mags but never Pmags.
They told you to sand a $300 lower? F that.
Have you tried pressing the magazine release button all the way in until the magazine catch clears the lower receiver, then rotating the magazine catch one turn counter clockwise? It could be nothing more than the magazine catch is too tight.
I am with
mtdawg169
......sanding a new receiver, nope. Either the lower receiver is in spec or it's not.
Edit to add: Never mind, I see you have already sanded the magwell to your satisfaction.
I am with
mtdawg169
......sanding a new receiver, nope. Either the lower receiver is in spec or it's not.Edit to add: Never mind, I see you have already sanded the magwell to your satisfaction.
I'd be curious to know if this issue was with pmags (what generation?) or if it was with GI mags?
