USPSA Legal +4 Magazine Extension for M & P 9mm

AuxArc presents a USPSA Legal Magazine Extension designed to work with the M & P line of 9mm and .40

 

Boost MeI appreciate the downloads and  boosts!  That's what keeps me designing and churning out these designs.  

  This Magazine Extension designed to work with the M & P line of 9mm and .40.  You can expect +3-4 rds.  You will need a ¼-20 x 3/16ths flat bottom set screw.  To install, clear the supports and remove the existing extension.  Set the spring in, slide into place and slide the locking plate into place.  Tighten the setscrew so the plate isn't sliding around, but not so tight that you are causing warping.  

 

  I have printed in PETG and PLA both.  If you have something tougher you can print it in, I would.  Mine are useful for training and local matches, but I wouldn't push them much beyond that.