Perfect for a carbine - AT3 Tactical LEOS Red Dot Sight with Integrated Laser Sight & Riser

I got this for a 45 caliber carbine that I purchased recently. Down at the range. Took only about 20 minutes with the use of a laser 4 cider to get the Red. And the laser to both co-witness at 100 yd. After around 500 rounds, still tight. Still on point. It's been an excellent adjunct.