What company produces the new foreward pistol grip? I know who makes the bolt on rail system (2 inch length), but anyone who already has one attached should take some precautions. First, the supplied hardware should be used as instructed, but be sure to use "lock-tite" on the washer. Also, ensure that it dries completely for about 24 hourse prior to use. If you don't use this, it is possible for the bolts to back themselves off. But, could someone just tell me who makes this grip?