Coil Mainspring Vise This tool is designed to safely compress the coil mainspring in a Thompson Center and other similar imported locks that use a coil mainspring. Our customers report that this works to compress the coil mainspring on a H&R 622 pistol. Novice gun owners may try to disassemble a coil mainspring lock using a needle nose Vice-Grip® p

Mainspring Vise Novice gun owners may try to disassemble a fine lock using a Channel Lock® or Vice-Grip® pliers, but every experienced gunsmith knows the value of our mainspring vise. Avoid scratching your mainspring. Scratches form stress marks, eventually causing breakage. Draw the lock to half cock, slip on the spring vise, gently tighten the sc