Select fire conversion done by PDI. Beta Mag adapter manufactured by PDI. This is a select fire, (semi/full auto) Glock 17C with telescoping stock and folding foregrip. Average rate of fire 900RPM. This weapon can ONLY be purchased by LE, Gov, or Class III Dealers with a law letter. This is a Dealers Post Sample weapon and not available for purchase through the website please call and inquire about purchasing.