Very good red dot - Bushnell AR Optics TRS-26 Red Dot Sight

Bought one along with a Bushnell 3x magnifier. Installed both on an AR .556/.223 black rifle. Mounting was easy, every thing went as it should. A QD lever on the TRS would be nice, rather than the screws. The magnifier came with a lever style QD mount. Nice. After a quick centering of the magnifier which worked perfect I did a USMC 36 yard zero and the setup was dead nuts on elevation, 1 inch left of center. I adjusted 1 click right for windage and it was then dead nuts elevation and windage. I then cranked the sight up 20 clicks and back down 20 clicks to see if it would hold it's zero. It did. 3 shots to zero and confirm. Super nice. I then moved out to a 100 yard bench rest and blasted off about a hundred and ten rounds at steel targets with a 6 inch white paint center circle. The dot was very clear at the 6 power setting and it was extremely easy to hold at 6 o'clock on the 6 inch circle. I rang that bugger every shot. Then it went haywire. Turns out the screws on the TRS mount had loosened up. This was probably operator error as I did not want to over tighten or strip the screws. Lock tight will help. I then removed the TRS from the rifle, reattached it, cranked the screws as tight as I could get them by hand using the supplied tool and did another 36 yard USMC zero. Dang thing was still spot on. Really nice. Back out to the 100 yd rest and continued ringing steel for another 30 rounds. The TRS will hold zero when cranking the windage and elevation settings and when removing and reinstalling the sight on the rifle. I cant ask for anything more. The price is great, the quality is exceptional, highly recommended.