A 5 MOA SRO arrived today with a dead battery. I mounted it on a P-10, changed out the battery and ran 250 rounds of American Eagle ball through the pistol. 50 rounds 115, 50 rds 124 and 150 rds 147 with no function issues. I like the SRO even better than my favorite large-decal DPP’s, mostly because the window is taller, and I like the extra room for tracking the dot vertically.