1399 carbine stock fit problem

[ped]

i drilled and tapped a hole forwards of the std mounting holes underneath the stock so that it push's against the bottom of the grip frame no play in the stock now and use the same trick as david with the velcro on pump arms
ped

[BDS]

Yes, a little bit of 3M Blue Tape on the back strap until you have the thickness where you want it. Trim the excess (side to side) off clean with the backstrap thickness.

Or, more permanent, install the stock, find centerline of the stock & frame X and Y axis at the bottom (butt) of the stock. Drill through stock and frame as one unit with a .060" drill bit. Remove stock. Find the .060" hole in butt of frame and, if on center or very near center, drill and tap for a 6-32 machine screw. Find .060 hole in stock butt, drill through for clearance of the 6-32 screw and counter sink plastic butt for a bevel head screw.

Put back together and instal the 6-32 bevel head screw. No more wobble.