Tricky. but worth it. giggle switch for sure. - Franklin Armory BFSIII PC-C1 Binary Triggers

Be prepared to assemble and disassemble your PC Charger/Carbine several times. Not an install for those without patience, ornlack of mechanical aptitude. Take your time, dont rush, and install inside of a large bag of some sort to avoid springs flying. However, once installed correctly, oiled well, and broken in just a bit its a blast! Literally stupid fun on a PC Charger. Love it. I would recommend most folks to have install done by a competent gsmith. All in, its pricy, be forewarned. Trigger is pricy, gunsmith can be pricy if you go that route, youll need several 30rd Glock mags, I use KCI with minimal issue. Last but not leastz ammo. 30rds can be gone in about 3seconds. It chews thru ammo....but boy is it fun. Perfect range toy, or home defense setup. Mine will run HPs reliably as well..