Safety Mouth Piece .40 Caliber Blowgun Accessory - once the projectile (dart) has been loaded into the mouthpiece, the dart can only move forward... allowing an anit-inhale safety feature. Simply slide over the end of any .40 cal barrel and fire away!
It's ok but still having trouble blowing the darts out. I have to trim off part of the dart skirt to get them to work right
Are your darts the 'Avenger' brand? If they are and you're still having problems, just put a note on your next order and I'll include another mouthpiece for you free of charge... maybe it's possible we got a defect from the manufacturer. You are clicking them in past the safety ring before you attempt to shoot right? -S2G