The new S-LOCK wedge on the NEW Seekins HIT Precision Mount is the answer to a worry-free, slip-proof, fire-and-forget mounting system. The S-LOCK wedge takes up the spacing between Picatinny rail slots, eliminating any rail movement for the most rock-solid scope mount on the market. Simple and easy to install with no added weight for springs, levers, clamps, and anything else to slow you down.