Manufactured to MIL-SPEC-1913, the Accucam Scout Length Mounting Base raises the line of ht by 1/2-inch, offering a proper cheek weld when optical devices are attached. The quick detachable scope mount rail extends two inches beyond the end of the receiver and clears the forearm.It was developed to accommodate "scout" type scopes, long body scope tubes, and night vision compatible red dot hts with night vision monocus mounted to their rear. Once the optic is mounted, the integrated Accucam Quick Detach Lever System provides the shooter with the ability to quickly remove the scope in order to utilize other optics as the mission may require, and have the confidence of 1/2 MOA repeatability upon re-installation.As with all GG&G products, the QD Scout Rail is dened and manufactured to meet the rigors of combat and professional use. The Accucam Scout Length Mounting Base 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 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. Unlike many quick detachable scope mounts, it is fully adjustable to fit Weaver and MIL-STD 1913 dovetails. The patent pending den allows you to adjust the tension to accommodate out of spec or worn dovetails. It is not recommended for .50 BMG or lightweight machine s.In tests, the Accucam Locking Lever System has shown to be repeatable to 1/2 MOA. The unique finger loop lever is easily operated, even with a gloved hand, and the rounded den is ergonomic and virtually snag proof. The Accucam mechanism is manufactured from solid billet 4140 steel and manganese phosphated matte black per mil-spec