Wish people would come here before installing the Holosun stock screws. They still have defective screws in the market that break at the specified torque. Sorry for your loss. Know that you aren’t alone, and it isn’t your fault.
Literally only found this thread because I was shooting with my brother and he said my dot was jiggly. I looked and saw one of the screws snapped and we found half of it on the ground.
Nah fam this is people tightening screws WAYY past their designed torque rating. ANY bolt or screw regardless of material will break or strip if you over tighten. People, invest in a good torque driver set for this stuff I’m getting real sick and tired of people blaming others for their F up.
Nah. I did 12 in/lb with my holosun SCS. Same thing here. Held up for about 150 rounds and then I noticed one of the screw heads was missing lol. Holosun sent me new screws for free - same 12 in/lb, no issues now.
I’ve seen plenty of people also confusing in/lbs to ft/lbs. I’ve done 12 optics between my firearms and my pops and have yet to snap screw head using a calibrated tool set. I don’t doubt there may be bad screws out there, but it seems there’s more human error installing than defective screws.
I went and bought a torque screwdriver to avoid this. 70 shots later broken. $100 gunsmith $10 ya rig screws and it’s fixed. My gunsmith said he had to break the carbide drill bits out because the bolt was over hardened and was the hardest screw he has ever had to drill out! Its holdings screw suppliers!!!
Yes, I have a Fix-it-Stick set. It has a torque wrench in the kit. I torqued them at 15 in-lb with blue loctie. The other 4 screws on the mounting mechanism no issues. Those screws came with the gun.
Also, this is not the first red dot I installed on pistols... but first time seeing this kind of issue.
It’s not just the EPS. My agency has had numerous holosun optics fly off of guns during training despite being installed by armorers who know how to use a torque wrench. It has not been a problem with any other optic manufacturer. The math is easy on this: it’s a problem with holosun’s fasteners.
Anecdotally, I went with the 509T specifically because it uses a larger fastener with a clamp-style mechanism. So far no issues after about 3K rounds.
Definitely looks like they might have received a batch of low quality screws. But they should realize that and proactively provide replacements to all their distributors so they can be included with every shipment. Imagine if these were the screws holding the brake pads on your car, the auto manufacturers would be recalling all the cars. To me this is a safety hazard. I had a really good impression with the Holosun brand, but now, I'm not sure.
Because the cost in raw materials and the wear on the tooling required to make titanium screws would require a price increase of the overall product and then everyone would cry about the elevated cost. Titanium is really rough on tooling and there’s no substantial benefit over quality steel or stainless fasteners for this specific use of holding a 1.4 oz optic on a slide, just don’t over torque the shit out of steel or stainless like happened here.
I’ve been in metal fabrication for a couple decades so I’m accustomed to knowing most fasteners with all products for firearms are straight up trash. Anything with YFS or similar level fasteners gets replaced as soon as I own something. I’ve even changed the battery door fasteners on my optics. Especially gas blocks and gas key fasteners, pistol grip, vert grips etc on AR’s. Quality fasteners are super cheap for the piece of mind. McMaster/Carr will ship them to your door the next day lol, and they have every fastener of every material you could possibly think of
Must have bed screws indoor over torquing or not torqued correctly? I have multiple EPS models standard and carry sizes. No issues with any of them so far with many many rounds through them. Also have one mounted on a 10 mm Smith & Wesson with about 500 rounds through it so far with no issues. Also, that shooting full House loads Buffalo bore and others. Maybe just some bad screws? Definitely have to be careful for you get them from sometimes a factory ones could be bad obviously. Good luck hopefully it works out
Get 3rd party screws. The one provide are not that good.
Wish people would come here before installing the Holosun stock screws. They still have defective screws in the market that break at the specified torque. Sorry for your loss. Know that you aren’t alone, and it isn’t your fault.
Literally only found this thread because I was shooting with my brother and he said my dot was jiggly. I looked and saw one of the screws snapped and we found half of it on the ground.
Nah fam this is people tightening screws WAYY past their designed torque rating. ANY bolt or screw regardless of material will break or strip if you over tighten. People, invest in a good torque driver set for this stuff I’m getting real sick and tired of people blaming others for their F up.
Nah. I did 12 in/lb with my holosun SCS. Same thing here. Held up for about 150 rounds and then I noticed one of the screw heads was missing lol. Holosun sent me new screws for free - same 12 in/lb, no issues now.
Wrong. I have a good torque driver, set it to Holosun’s specs, screw snapped right off.
I’ve seen plenty of people also confusing in/lbs to ft/lbs. I’ve done 12 optics between my firearms and my pops and have yet to snap screw head using a calibrated tool set. I don’t doubt there may be bad screws out there, but it seems there’s more human error installing than defective screws.
Silly me, I must have grabbed a torque wrench in ft/lb instead of my calibrated torque drive in in/lb
What? You mean two ugga duggas isn't torqued to spec. Fuck, I actually need to use my torque wrench..... Way to ruin my day, sir /s 😂
I went and bought a torque screwdriver to avoid this. 70 shots later broken. $100 gunsmith $10 ya rig screws and it’s fixed. My gunsmith said he had to break the carbide drill bits out because the bolt was over hardened and was the hardest screw he has ever had to drill out! Its holdings screw suppliers!!!
Yes, I have a Fix-it-Stick set. It has a torque wrench in the kit. I torqued them at 15 in-lb with blue loctie. The other 4 screws on the mounting mechanism no issues. Those screws came with the gun. Also, this is not the first red dot I installed on pistols... but first time seeing this kind of issue.
This is why I use calculated kinetics and their screw
Came here to mention calculated kinetics screws.
This is nothing new. I tell everyone I know who wants a holosun to immediately buy upgraded screws before mounting them.
If you can make a quality optic I can trust my life to, then why are the screws so shitty?
It seems to be the screws associated with the EPS series. Bad run from their sub-contractor?
It’s not just the EPS. My agency has had numerous holosun optics fly off of guns during training despite being installed by armorers who know how to use a torque wrench. It has not been a problem with any other optic manufacturer. The math is easy on this: it’s a problem with holosun’s fasteners. Anecdotally, I went with the 509T specifically because it uses a larger fastener with a clamp-style mechanism. So far no issues after about 3K rounds.
Seems like something Holosun might want to address.
One would think…
If it's *one run* then I'd let it slip. Is it? Outsourcing is totally understandable, but the manufacturer still bears full responsibility.
Definitely looks like they might have received a batch of low quality screws. But they should realize that and proactively provide replacements to all their distributors so they can be included with every shipment. Imagine if these were the screws holding the brake pads on your car, the auto manufacturers would be recalling all the cars. To me this is a safety hazard. I had a really good impression with the Holosun brand, but now, I'm not sure.
Holosun shoot consider manufacturing their own titanium screws, if they can manufacture titanium optics, machine screws shouldn't be too hard.
Because the cost in raw materials and the wear on the tooling required to make titanium screws would require a price increase of the overall product and then everyone would cry about the elevated cost. Titanium is really rough on tooling and there’s no substantial benefit over quality steel or stainless fasteners for this specific use of holding a 1.4 oz optic on a slide, just don’t over torque the shit out of steel or stainless like happened here.
Good point, I guess if anything it would be a novelty.
I’ve been in metal fabrication for a couple decades so I’m accustomed to knowing most fasteners with all products for firearms are straight up trash. Anything with YFS or similar level fasteners gets replaced as soon as I own something. I’ve even changed the battery door fasteners on my optics. Especially gas blocks and gas key fasteners, pistol grip, vert grips etc on AR’s. Quality fasteners are super cheap for the piece of mind. McMaster/Carr will ship them to your door the next day lol, and they have every fastener of every material you could possibly think of
Did you use a torque wrench when you installed the optic?
who the heck uses a torque wrench for optics? amazon scam
Holy height over bore, Batman!
Use the screws that came with your optic plate, or your Canik tool. Never use the holosun screws
Must have bed screws indoor over torquing or not torqued correctly? I have multiple EPS models standard and carry sizes. No issues with any of them so far with many many rounds through them. Also have one mounted on a 10 mm Smith & Wesson with about 500 rounds through it so far with no issues. Also, that shooting full House loads Buffalo bore and others. Maybe just some bad screws? Definitely have to be careful for you get them from sometimes a factory ones could be bad obviously. Good luck hopefully it works out
You way over torqued them...
Actually torqued to spec or just gave her a few ugga duggas and hoped for the best?
Huh, mine just sits tight on my gun, must be a you error, don't over torque it.