In any case, the device pictured appears to me to simply be a spring - designed to hold the trigger back. On a semi-auto, as we all know, the trigger must be pulled each time the weapon is to fire. I do not see how this device is capable of repeatedly pulling the trigger, own it's own. I believe that this thing is only a gimmick....and that the weapon would have to be converted to full-automatic (the interruptor removed or modified)...before this thing would work. If that is the case, then what good is the device ? Of course, it is HIGHLY illegal to do such modifications to any weapon - and not recommended, anyway. But, the seller's of this device would not be legally liable if someone were to modify the FCG to make it work....because they could claim that they never instructed or recommended that anyone do this.

Just another piece of junk....hawked to the Rambo wannabe crowd.