Cut down Promag box 10's to 5's ??

[TheDarkHorse 216]

Back when these were first introduced, I invested in these when the price was still reasonable. Since then I have tried the various fixes to make them reliable. They are much improved, but still not 100%. I have come to the conclusion that ultimately the springs are not strong enough. I am planning to get a MDA drum (or two) but I don't want to part with the mags that I have so much time and money invested in. Question is, has anyone cut the 10-rounders down to 5's and did it fix the feed issues?

 

[Fallschirmjager667 729]

i did and yes it fixed the issue, it's the mag i use when hunting with my s12

[havok 21]

Did you add plastic to the front of the follower to prevent it from tilting forward and making the round nose dive?

[TheDarkHorse 216]

Did you add plastic to the front of the follower to prevent it from tilting forward and making the round nose dive?

No, because nose-diving isnt my issue. The shells won't advance as fast as they need to.

 

Edited March 15, 2012 by TheDarkHorse

[Guns Are Great 140]

did you try stretching the springs out about 6 inches? I think it was pauly from pauly's steelin that said it worked on the 10 or 12's but I'm thinking it was the 12's. I used on my 12 rdr's. Contact Pauly or search it out and see what he says.

Edited March 15, 2012 by Guns Are Great

[Fallschirmjager667 729]

did you try stretching the springs out about 6 inches? I think it was pauly from pauly's steelin that said it worked on the 10 or 12's but I'm thinking it was the 12's. I used on my 12 rdr's. Contact Pauly or search it out and see what he says.

 

that might work on surefires, but on promags the inside of the body is too narrow, after i shortened mine i used some sandpaper on the inside

[havok 21]

Some of the first 10 rounders had shorter springs, I had both and the new ones have more coils and is longer. I posted this a few years ago 09 and just tried to find it but the search on this site suck's. The new springs have 39 turns. Also my old springs were black and the new was silver.

Edited March 16, 2012 by havok

[TheDarkHorse 216]

If I remember correctly, mine are the Gen II and have silver springs....

 

[dayofruin 425]

Just a suggestion, and you may have already tried it, but I saw a video quite a while back on fixing the promag 10's. The guy in the video described a similar problem as you did. He was using a flat head screwdriver to scrape the inside of the magazine where the follower rides to smooth out the function. I don't have any promags but I'm pretty sure that's what he was fixing. If nothing else, sell them on eBay and get some new ones. (no I don't mean screw someone. Someone will buy even if they need work)

[TheDarkHorse 216]

I'm not ready to part with them. In fact, I'm struggling with the idea of cutting them down. Maybe I wont be as reluctant when I get a drum. As I said, they are much improved over when they were new, just not 100%.

[G O B 3,516]

Try spraying the inside of the mag with dry silicone spray. I do that to all my polymer mags, and the MD drum.

[Guns Are Great 140]

did you try stretching the springs out about 6 inches? I think it was pauly from pauly's steelin that said it worked on the 10 or 12's but I'm thinking it was the 12's. I used on my 12 rdr's. Contact Pauly or search it out and see what he says.

 

that might work on surefires, but on promags the inside of the body is too narrow, after i shortened mine i used some sandpaper on the inside

AHH! Thanks! I didn't realize that. I 've never used the Promag mags in my saiga just the promag drums, MDArms drums, AGP and surefire mags. The surefire 12's are the ones I stretched the springs on.