Last week I bought a Holosun HS515C red dot sight to replace the Bushnell TRS-25 that I used to have on my Beretta Cx4 Storm 9mm carbine. The Bushnell is a good budget optic Today I zeroed it.
Out of the box the sight was very close to being on at 50 yards, with elevation right on and the mean POI about 3 - 4" to the right with 115 grain CCI Blazer Brass 9mm.
A neat touch with the sight is that the turret caps are actually adjustment tools. The little ridge on them is sized the same as the screwdriver slots on the actual adjustment knobs. This is a brilliant idea, IMO.
Top of the sight showing the screwdriver built into the caps, and the solar cell:
Accuracy at 50 yards was OK but nothing to crow about. Here's a 10 shot target fired from the bench. As you can see I yanked one low. The Storm's trigger is worse than I'd remembered. I am definitely going to try doing a trigger job on it.
I also shot a bit offhand but the target definitely isn't worth sharing. ;) The gun is so light with a neutral balance that offhand shooting is a challenge.
I put a total of 100 rounds through the gun today and as expected, it ran perfectly. However, when I went to clean the gun after I was finished I noticed that the rail was a bit loose. It'll be Loctited and then I'll recheck the zero.