With the development of our proprietary patent pending Accucam Quick Detach Locking Lever System we are now able to fill many Quick Detach mounting requirements. The Accucam QD Standard Base is five inches long with its rail manufactured to MIL-STD-1913. It adds 1/2 inch to the height of the mounting platform. The GG&G Standard Base is designed and manufactured to meet the rigors of combat and professional use. It is manufactured from solid billet 6061 T6 aluminum alloy and has a Type III hard coat anodized matte black mil-spec finish. All edges have been dehorned to protect the operator. The Accucam QD Locking Lever System provides you with a solid method to quickly install or remove the mounting base from the weapon system. The base can be quickly installed on a dovetail rail in seconds by rotating the Accucam Cam Lever to the locked position. It can then be quickly removed by rotating the Accucam Cam Lever to the unlocked position. It is fully adjustable to fit Weaver and MIL-STD-1913 dovetails. The unique design allows you to adjust the tension to accommodate out of spec or worn dovetails. In tests, the Accucam Quick Detach Scope Rings with the locking lever are shown to be repeatable to 1/2 MOA. The unique finger loop design is easily operated, even with a gloved hand and the rounded design is ergonomic and virtually snag proof. The Accucam mechanism is manufactured from solid billet 4140 steel and manganese phosphated matte black per mil-spec. QD Scope Mounts and accessories are made in the USA at our Tucson Arizona factory.