jstagn Posted May 18, 2021 Share Posted May 18, 2021 Recently after about 20 k rounds the slide started locking back while shooting. I quick rack and back to normal. Once every 50 or so rounds. Happens on different mags same loads 38 sc. Maybe using too much oil and it’s migrating onto pin and dimple on slide stop. Pin seems to have lots of tension. Solutions? Thanks Link to comment Share on other sites More sharing options...
Aircooled6racer Posted May 18, 2021 Share Posted May 18, 2021 Hello, are your followers the type that activate the slide stop? If they are then either grind the followers so they don't hit the slide stop or grind the slide stop so the follower does not hit the slide stop. You can also look at the detent spring and see if it is shorter. I grind the slide stop so that the follower doesn't hit or even a round could activate it. Thanks, Eric Link to comment Share on other sites More sharing options...
zzt Posted May 18, 2021 Share Posted May 18, 2021 I do the opposite of Eric, because I have some mags that lock back (required at one club) and a lot that don't. MBX competition mags do not lock back. I have to modify my TTI followers so they won't. Link to comment Share on other sites More sharing options...
jstagn Posted May 18, 2021 Author Share Posted May 18, 2021 (edited) Mags do not and have not EVER locked back , grams inners and this just started after 20 k. .thanks Edited May 18, 2021 by jstagn Missing Link to comment Share on other sites More sharing options...
ima45dv8 Posted May 19, 2021 Share Posted May 19, 2021 Have you maybe had a slight change in grip lately? That left-hand thumb can cause issues like this. Link to comment Share on other sites More sharing options...
jstagn Posted May 19, 2021 Author Share Posted May 19, 2021 Open gun with thumbrest. Thanks Link to comment Share on other sites More sharing options...
Aircooled6racer Posted May 19, 2021 Share Posted May 19, 2021 Hello, check the feed lips on your magazines. It could be that your rounds are hitting the slide stop. Also check your grip screws to make sure they are tight. Also check your grip to see if it is cracked. Thanks, Eric Link to comment Share on other sites More sharing options...
jstagn Posted May 19, 2021 Author Share Posted May 19, 2021 Thanks Eric, will check everything you suggested! Link to comment Share on other sites More sharing options...
SJBriggs Posted May 20, 2021 Share Posted May 20, 2021 On 5/18/2021 at 7:13 PM, Aircooled6racer said: Hello, check the feed lips on your magazines. It could be that your rounds are hitting the slide stop. Also check your grip screws to make sure they are tight. Also check your grip to see if it is cracked. Thanks, Eric +2 on the bullets hitting the lever. If you switched to a different profile, maybe the new rounds are just barely bumping the slide stop lever. Have you filed down the inside of the lever, or just clearanced the followers? Link to comment Share on other sites More sharing options...
zombywoof Posted May 20, 2021 Share Posted May 20, 2021 I grind a small dimple into the slide stop where the plunger contacts it. Link to comment Share on other sites More sharing options...
yigal Posted May 20, 2021 Share Posted May 20, 2021 27 minutes ago, zombywoof said: I grind a small dimple into the slide stop where the plunger contacts it. Link to comment Share on other sites More sharing options...
dansedgli Posted May 20, 2021 Share Posted May 20, 2021 Broken plunger spring behind the bit that contacts your slide stop? Link to comment Share on other sites More sharing options...
jstagn Posted May 21, 2021 Author Share Posted May 21, 2021 Thanks to all who replied, all possible problems. Solution, Eric and others solved problem. Slide stop was ground from builder, mag followers were not (grams). After 20+ k rounds things loosen up enough where the bullets (same for all 20k rounds), were in fact occasionally hitting slide stop. Ground back of slide stop as much as I dare. No problems with 140 rounds fired. Will do more. Also going to grind the corner of the grams followers down to make sure this never happens again, particularly since it is my match gun. Again thanks to all, you guys are a big help! Link to comment Share on other sites More sharing options...
Bakerjd Posted May 21, 2021 Share Posted May 21, 2021 1 hour ago, jstagn said: Thanks to all who replied, all possible problems. Solution, Eric and others solved problem. Slide stop was ground from builder, mag followers were not (grams). After 20+ k rounds things loosen up enough where the bullets (same for all 20k rounds), were in fact occasionally hitting slide stop. Ground back of slide stop as much as I dare. No problems with 140 rounds fired. Will do more. Also going to grind the corner of the grams followers down to make sure this never happens again, particularly since it is my match gun. Again thanks to all, you guys are a big help! Was just gonna say bullets hitting slide stop is usually the issue. Most people dont want to cut the slide stop and only do the followers. This is the end result. Link to comment Share on other sites More sharing options...
Aircooled6racer Posted May 21, 2021 Share Posted May 21, 2021 Hello, glad you solved the problem. Thanks, Eric Link to comment Share on other sites More sharing options...
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