A good deal for the $ - TruGlo Tru Brite Open Dot Sight

I originally purchased this sight for even less than it is advertised on this one; but it was on a sale. I first mounted it to my Bushmaster Patrol rifle and it worked well but then moved up and switched it to my S&W M&P15-.22lr training rifle. On this rifle it excels! I have only one little gripe but not big enough to vilify the optic. As time passes, the reticle "flickers" as you make changes in intensity or switch between the reticle legends (new batteries made no difference)&I can live with it. That's it...I have had no other hiccups and will keep this thing on my .22 M&P. I didn't use it for an extended period on the Bushmaster but that is not the optics fault. I think for the money it is hard to beat.