Mpikomy Posted January 31, 2017 Share Posted January 31, 2017 So my Dad has a zev glock 34. He has gone through 3 front sights as of today, the screws keep shearing off. Has anyone seen this before? Any suggestions? They haven't been over torqued, so that's not the problem. Sent from my iPhone using Tapatalk Link to comment Share on other sites More sharing options...
mreed911 Posted January 31, 2017 Share Posted January 31, 2017 What's he catching it on? Perhaps his holster sight channel has an obstruction? If he's shooting it is he catching it on a port? Is the end of the barrel protected by the end of the holster? Link to comment Share on other sites More sharing options...
shooting for M Posted January 31, 2017 Share Posted January 31, 2017 My limited gun snaps front sights like crazy. It just been sitting in the safe for a while with a broken sight because I'm sick of messing with it. I had a thought the other day though. I have lightening cuts in the slide and I'm thinking it's causing enough flex to gradually break the sight. I'm going to order another and relieve a lot of the bottom of the sight and see if that helps. Being a ZEV slide made me think of it if it's got the cuts. Anyone know if my solution is probable? Or ever heard of this before?Sent from my Moto G (4) using Tapatalk Link to comment Share on other sites More sharing options...
taxil343 Posted January 31, 2017 Share Posted January 31, 2017 8 hours ago, mreed911 said: What's he catching it on? Perhaps his holster sight channel has an obstruction? If he's shooting it is he catching it on a port? Is the end of the barrel protected by the end of the holster? This. While a lightened slide may be more violent I would guess the issue is contact while firing the gun. Link to comment Share on other sites More sharing options...
MemphisMechanic Posted January 31, 2017 Share Posted January 31, 2017 More recoil spring? Is the slide is slamming into the back of the frame violently, perhaps? Link to comment Share on other sites More sharing options...
Sarge Posted January 31, 2017 Share Posted January 31, 2017 It's really easy to overtighten that little Glock nut. Try just snugging it down with some blue loctite. Link to comment Share on other sites More sharing options...
Mpikomy Posted January 31, 2017 Author Share Posted January 31, 2017 He isn't snagging it on anything, not even drawing from a holster. Case to shooting line and it flies off while he is shooting. It does have the slide cuts and that was my first thought, maybe too much momentum from the lighter slide but that seems like something the manufacturer should design for. I'll tell him to try loctite and just snug. Sent from my iPhone using Tapatalk Link to comment Share on other sites More sharing options...
9x45 Posted January 31, 2017 Share Posted January 31, 2017 (edited) The screws are junk, it's not from shooting. Get the stainless ones from Brownells, and use Permatex # 2 and not a thread locker. I've smashed mine into ports plenty of times and nothing.... 100-006-816WB Front Sight Screws for Glock®, 2-Pack Mfr Part: FSSCREW316HEX2P Edited January 31, 2017 by 9x45 Link to comment Share on other sites More sharing options...
steven785 Posted January 31, 2017 Share Posted January 31, 2017 6 hours ago, Sarge said: blue loctite. I always go red now as I've had too many front sights come loose with blue. Link to comment Share on other sites More sharing options...
Sarge Posted January 31, 2017 Share Posted January 31, 2017 27 minutes ago, steven785 said: I always go red now as I've had too many front sights come loose with blue. Since the problem was screw breaking I guessed it was being over tightened. Blue should show if loctite at least fixes the problem before going full on red Link to comment Share on other sites More sharing options...
Southpaw Posted January 31, 2017 Share Posted January 31, 2017 I've never had this happen and I've used all kinds of sights over the years using whatever screw they supplied and loctite. Sounds like it could have been over torqued. Another possibility is using too much loctite. I've never seen this happen myself, but I've heard if you use too much loctite when it hardens and expands it can break a little screw like these. You only need a dab of loctite, don't have to dunk the whole screw in it. And I use red loctite on front sight screws now too after having one come loose with blue. Link to comment Share on other sites More sharing options...
MemphisMechanic Posted February 5, 2017 Share Posted February 5, 2017 (edited) I've switched all our locals over from blue loctite to red. Everyone who used blue eventually had the front post come loose. Red holds. Heat and vibration are the two ways you break down loctite. The muzzle end of a slide sees plenty of both. Degrease the threads and front of slide with brake cleaner before install. Barely torque the screw. Use red. Don't shoot it for 24 hours after installation. No more problems. Edited February 5, 2017 by MemphisMechanic Link to comment Share on other sites More sharing options...
PrimaryBruce Posted February 9, 2017 Share Posted February 9, 2017 (edited) Problem with red is you're never getting it back off without heat. Not a problem for plain black or fiber optic fronts, but it doesn't take much heat AT ALL to ruin tritium sights. We constantly get customer Glock slides with so much blue or red loctite gooped in the threads that one of two things happen: 1. We have to heat it to get the screw loose which ruins the tritium insert 2. We don't use heat and the head of the bolt shears off when we try to loosen and the sight is still ruined because it's just about impossible to get the now broken bolt out Edited February 9, 2017 by PrimaryBruce Link to comment Share on other sites More sharing options...
bigtimelarry Posted February 10, 2017 Share Posted February 10, 2017 I use Dawson or Sevigny Screws and 620 Loctite.. I'll had over 50k rounds on a G17 and when I was Changing the Front Sight it was Still Super Tight.. Link to comment Share on other sites More sharing options...
RePete Posted February 12, 2017 Share Posted February 12, 2017 I've been running HiViz sights for 8 years and have never had one shear off. I've also used Warren sights with equal success. Link to comment Share on other sites More sharing options...
9x45 Posted February 13, 2017 Share Posted February 13, 2017 Well, my old 2 pin G17 has over 200K on it using Permatex # 2 instead of a thread locker. Link to comment Share on other sites More sharing options...
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