M&P Shield 9mm +2 extension

i got bored and modeled this at first i made it add 3 but the spring was too weak to cycle perfectly once i went to +2 it functioned perfect. i printed it in petg so hopefully it last a good while but abs would be a great material for this. pla might be too weak. you will need an m3 screw and a little force to get the back part threaded down but it holds up nicely and fits pretty good.