The bolt is constructed entirely of delrin so it is extremely light-weight. The new design of the "Low Blow" bolt requires o-rings for best performance. The o-rings must be lubricated with a light film of oil or grease. This bolt helps to impart a slight back-spin on the ball which will improve accuracy, flatten trajectory, and improve range. - Imparts a slight back-spin on ball - Improves accuracy/flattens trajectory - Dual O-rings reduce blow-back/ball hop - Increases maximum achievable rate of fire - Reduces weight/softens recoil
made for Pilot/Electras 2008 or newer