Samson DMR Scope Bases feature rugged styling, tested return-to-zero capability, and one-handed quick release locking mechanisms. Scope mounts are constructed of 6061 T6 aircraft grade aluminum, stainless steel locking mechanisms and multi-start threading for rapid quick release action. The only mounts on the market to combine all of the best features in one device. Features 2.00″ Offset to first ring.