Holosun 510C Drop test...

[mshill]

I had just mounted my brand new HS510C on my Bullpups Unlimited Mossberg 500 12 gauge. After a few slow shots of 00 buck to get the POA=POI I loaded up and let off a string of shots. On about the 6th shot, when I pulled the trigger, something pretty big hit me in the forehead and then flew about five feet behind me and hit the ground (cement slab) and bounced.

Yep. Sure enough I looked and there it was, my new HS510C laying on the ground. I picked it up and took a look at it, not a scratch on the case and no broken glass, and it was still on. So far so good.

The rail on the Bullpups Unlimited chassis is plastic and the edges are a bit rounded. Best I can figure is that I didn't really crank down on the Quick Release Lever screw and it just wasn't on very solidly and popped off.

I put it back on and cranked the QR Lever screw down so that it required quite a bit of pressure to cam over and latch. Finished the box of shells off (about another 15 or so) and it stayed put and was still zeroed.

I have to say I was a bit concerned when I saw it laying on the ground, but it took some abuse and not only survived, but stayed true through it all.

I was fairly impressed.

[madjack956]

Glad it all worked out for you.

The mount on my Bushnell TRS-25 did the same thing until I cranked down on the cam screw and hit it with red Locktite.

[solidfreshdope]

[mshill]

For this last one I bought, I thought about going for green, but I know I can use the red in all sorts of lighting conditions so I stuck with it.

I have three on 5.56 AR Pistol, 300BLK Pistol, and Mossberg 500 12G.
I have had the first for a year and set to auto on and have yet to have to replace the battery. None of the three are safe queens either, they all get shot at least once a month and most of the time twice a month.

My experience in post #1 would indicate that they are durable as well. I love them and now that I have a sights with the auto-on feature, it is a must for any HD weapon. When I figure out the battery life question I will post it. Right now it is > 1year.

[hyl768s]

I have HS515C. Similar thing happened on mine, no plm as well. You really need time to find the sweet spot for those QD mount or it will pop during recoil.