This spring is a Monster! When you prime it you know it means business. Not for below average strength Adults, keeping in mind.... Yes you can prime it, but can you prime it for a whole game? Its a little tricky pushing down the light shoulder stock when installing for that pre compression.. big tip : when compressing it in place with the light shoulder stock, make sure you hear the stock *click* into place so you know the stock is secure, cuz if not, it will launch the blaster or the stock across the room depending on Wich part your holding.