I received my mounting plate and installed a Holosun 5O7 C on my Prodigy. I used the smaller screws, the larger screws did not seat; too long. It says on the store website on the mounting plate section that the screws may need modification. Am I good with the smaller Holosun supplied screws?
Holosun 507 C installation on the Prodigy
- Thread starter JWG
- Start date
Annihilator
Emissary
I would imagine they should be fine, as long as they tightened down and nothing is loose, just don’t over tighten them, read here they can strip out or break
Nicky Pass
Alpha
I put on a 508t and test fit it off the gun and the short screws were like a half tun from being flush when snugged, not torqued. So I would assume the when you torque them the spec, they are the perfect length. I torqued them to 18 inch pounds and everything looks and feels good.
Attachments
can’t speak of the 507..but I just put a 407c on mine, put roughly 150 down range yesterday and no issues.
I used the same screens that held the factory plate on to put the AOS plate on, used the short screws that came with the HS to put it on. I learned a long time ago…. Never tighten one screw/bolt all the way down to start. Snug a little, other one, snug a little, other one. I got both mine snug, then another 1/4 turn or so. I think the torque spec is 15 in pounds…
Good luck. Going to go put more down range later today. Everything was flush and tight, plate, sight…. And I gotta say, I’m not really into the Co Witness thing, but this site/plate combo do a pretty nice job of it.
I used the same screens that held the factory plate on to put the AOS plate on, used the short screws that came with the HS to put it on. I learned a long time ago…. Never tighten one screw/bolt all the way down to start. Snug a little, other one, snug a little, other one. I got both mine snug, then another 1/4 turn or so. I think the torque spec is 15 in pounds…
Good luck. Going to go put more down range later today. Everything was flush and tight, plate, sight…. And I gotta say, I’m not really into the Co Witness thing, but this site/plate combo do a pretty nice job of it.
RickAnderson
Custom
When I was concerned with the screw length, I have installed the Optic on the adapter plate with the plate off the pistol and inspected where the screws bottom out.
Its possible a pistol might have openings to allow for screws to extend past the adapter place, so check for that, but in most cases the screw can't extend past the bottom of the plate.
Ideally, after torqueing the screws down you want a couple of threads remaining before the screw is flush with the bottom of the plate.
It is possible, the screw won't extend far enough into the threads and won't have enough purchase on the threads and thus will strip out when torqued down. So check the optic is seated and the end of the screw is into the plate far enough to be almost to the bottom of the plate, before torqueing down.
When I have had screws too long, I have filed them down, when I had screws too short, I have found longer replacement screws at the hardware store and then filed them to the correct length. Many ACE and True Value hardware stores have an extensive fastener Aisle that includes "Gun Screws" that likely will be perfect for your project. The bigger home improvement stores often do not. While there, get nuts that fit the thread also, they are needed if you have to shorten the screw a bit. Most of the Gun Screws will have a "fitting plate" you can buy for the correct threads, cause a lot of the gun screws are so small, they won't carry a corresponding nut. I have used that fitting plate to fit the screws...
Remember, when you cut or file a screw, you mess up the threads at the cut, you need to have a nut on the screw before cutting/filing, cut it as square as possible, then run the nut over the threads, back and forth a few times to clean up the threads so that they will thread into the female threads after cutting.
You can use the plate as the nut when cutting, but remember, if you slip up and scratch the finish on the adapter plate, its not only a cosmetic flaw, it opens it up to future corrosion. I have cerakoted the adapter plate, for some gun projects, so in this case, I fitted the screws perfectly using the adapter plate filing them flush with the plate, then removing the optic and turning them two turns past flush and file flush again, which removed all the finish on the plate, but I then cerakoted it, making no difference in the end.
Its possible a pistol might have openings to allow for screws to extend past the adapter place, so check for that, but in most cases the screw can't extend past the bottom of the plate.
Ideally, after torqueing the screws down you want a couple of threads remaining before the screw is flush with the bottom of the plate.
It is possible, the screw won't extend far enough into the threads and won't have enough purchase on the threads and thus will strip out when torqued down. So check the optic is seated and the end of the screw is into the plate far enough to be almost to the bottom of the plate, before torqueing down.
When I have had screws too long, I have filed them down, when I had screws too short, I have found longer replacement screws at the hardware store and then filed them to the correct length. Many ACE and True Value hardware stores have an extensive fastener Aisle that includes "Gun Screws" that likely will be perfect for your project. The bigger home improvement stores often do not. While there, get nuts that fit the thread also, they are needed if you have to shorten the screw a bit. Most of the Gun Screws will have a "fitting plate" you can buy for the correct threads, cause a lot of the gun screws are so small, they won't carry a corresponding nut. I have used that fitting plate to fit the screws...
Remember, when you cut or file a screw, you mess up the threads at the cut, you need to have a nut on the screw before cutting/filing, cut it as square as possible, then run the nut over the threads, back and forth a few times to clean up the threads so that they will thread into the female threads after cutting.
You can use the plate as the nut when cutting, but remember, if you slip up and scratch the finish on the adapter plate, its not only a cosmetic flaw, it opens it up to future corrosion. I have cerakoted the adapter plate, for some gun projects, so in this case, I fitted the screws perfectly using the adapter plate filing them flush with the plate, then removing the optic and turning them two turns past flush and file flush again, which removed all the finish on the plate, but I then cerakoted it, making no difference in the end.
Thx!
Thx!
Thx!
Thx!