Crimson Trace just released recently their HRO or Heavy Recoil Optic that maintains that can take on the recoil of .30 firearms... "The HRO™ (Heavy Recoil Optic) is the next generation of quick acquisition tactical reflex sights. Packed with best-in-class features like CT Motion 'shake-to-wake' sensor and integrated Pic Rail mount, the HRO™ looks good and performs even better."