The only mods you should have to do is to the hammer where it catches on the trigger-you will have to take off app. 1mm so the hammer will clear the trigger and of course the selector notch at 21mm from the top rail. Please click on the link below for the instructions.

The Binary Boogie Hook is designed to be used with original full auto parts except for the auto sear and the auto sear spring.

DOES NOT COME WITH RATE RETARDER SPRING

To the best of my knowledge, it will NOT work with double hook, SAR, AIMR or some aftermarket trigger groups.

Instructions:

BINARY BOOGIE HOOK INSTRUCTIONS

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