PTR FULL AUTO CARRIER FOR K3P & RIFLES UPGRADE

-PTR Full Auto Bolt Carrier For PTR 308 Firearms With 12" barrel or longer. -The PTR Full Auto Bolt Carrier For PTR K3P PDW Pistol & Rifles will not fit the 51P Pistols. -This is for customers that have a Legal NFA Registered Sear Pack and would like to use that in conjunction with their firearm