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funflyr

After reload STI Mag dumped out 6-8 rounds on the ground.

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During a classifier stage last night after a mandatory reload when the STI 2011 (140mm) mag hit the ground rounds went everywhere.  What's the fix?

Thanks

Troy

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During a classifier stage last night after a mandatory reload when the STI 2011 (140mm) mag hit the ground rounds went everywhere.  What's the fix?
Thanks
Troy
what basepad is on the magazine?

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No the mag looks perfectly normal. It scattered 6-8 rounds on the floor. The stage was El Prez, I started with 19 rounds so it had 13 in it when it hit.

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Look at the feed lips on the mag and make sure the haven’t expanded.

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If it falls on basepad end the spring compresses and rounds pop out. Normal.

21,388

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Thanks, I will drop test it on my basement floor and see if happens again.

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15 minutes ago, funflyr said:

Thanks, I will drop test it on my basement floor and see if happens again.

Almost always see a round or two pop out. 6-8 popping out probably the follower twisted and stuck. Who knows. As long as the mag works fine in the gun I wouldn’t sweat it.

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I did a drop test last night and noticed the follower got stuck fairly low in the magazine.  I'm guessing the spring should not be twisted like this?

 

 

IMG_1203 (1).JPG

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1 hour ago, funflyr said:

I did a drop test last night and noticed the follower got stuck fairly low in the magazine.  I'm guessing the spring should not be twisted like this?

 

 

IMG_1203 (1).JPG

 

Pretty normal. 

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I did a drop test last night and noticed the follower got stuck fairly low in the magazine.  I'm guessing the spring should not be twisted like this?
 
 
1098454449_IMG_1203(1).JPG.19402c2de80544937cc2c9b202e6daf2.JPG
typically the followers have extra material on them that causes it to get stuck since it is plastic. Take the mag apart and by hand move the follower with spring in to the tube. you're looking for where it's getting caught and then remove a little material from follower. It should move pretty freely through the tube. I'd also run some 1000 grit sandpaper on the inside of the tube to smooth out any burrs.

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I will try that. Thanks. Is the twist in the spring normal?

 

 

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I will try that. Thanks. Is the twist in the spring normal?
 
 
it can happen with weaker springs. i'd consider extra power springs from wolff

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8 minutes ago, Rnlinebacker said:

it can happen with weaker springs. i'd consider extra power springs from wolff

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Thanks, its an original factory spring that probably should be replaced.

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1 minute ago, funflyr said:

Thanks, its an original factory spring that probably should be replaced.

Just know that you can't just put any spring with any follower in the tube. Make sure if you keep factory STI follower that springs you buy will fit them specifically. 

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Thanks, its an original factory spring that probably should be replaced.
actually, grams spring & follower is probably the best system available

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29 minutes ago, Rnlinebacker said:

actually, grams spring & follower is probably the best system available

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How do you tell if the STI mags are Gen 1 or Gen 2?  Looks like the Grams Follower kits are available for both generation mags.

 

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How do you tell if the STI mags are Gen 1 or Gen 2?  Looks like the Grams Follower kits are available for both generation mags.

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How do you tell if the STI mags are Gen 1 or Gen 2?  Looks like the Grams Follower kits are available for both generation mags.

Gen 1(top) has the ribs on the side. gen 2 (bottom) is smooth8eeaa6e1b39e6134efa9222d74de8348.jpgd502d54f1ab50452d26aaf3dbb736d51.jpg

 

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I would suggest replacing the springs. I used the TTI springs/Follower/basepad and get 21 with every mag (40 cal 140mm). 

 

Depending on how many rds you shoot a year, you might want to replace the springs 1x or 2x a year.

 

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And rounds displacing / ejecting is pretty normal. When the mag hit the floor, the weight of 13 stacked rounds compessed the spring. On the way down and back up, they leave the neat doublestack configuration and some fly out.

 

Download to 4 or so rounds more than you’ll need and you’ll see less of this.

 

This obviously applies only to classifier stages, and to ones taking place in a range with a hard floor.

 

 

Edited by MemphisMechanic

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