TRM m4 mod - w glock recoil spring

A modification on the original TRM - see original for full files - to allow the use of :

• Glock recoil guide rod springs (i used an 11lb spring, but you can cut down a normal 17 or 18 lb spring) 
• m4 nut and bolt.  (i found these easier to source)

note that i also used a 2mm x 18mm roll pin … as this was also easier to source.

note - this is just the follower plunger and the insert.  you'll still need the original TRM - https://makerworld.com/en/models/18459-t-r-m-g17-g19-trigger-reset-magazine?from=search