BLANK TPAK Ammo Cartridges

Safely cycles the UNIT4 bolt and mimics fit, form and feel of an M4 Rifle, without a projectile Compatible with screen-based, laser, infrared and optical based training technologies Features realistic trigger pull, accurate recoil and a rate of fire > 700 rounds per minute Fires in semi and full auto  Each UNIT4 Blank TPAK contains 40 to 60 charges of CO2 depending on the temperature and environment Customers should expect to get at least 800 blank shots from each box of 20 TPAKs ($0.10 per trigger pull)