This kit contains all the M1337 parts that require custom milling, custom printing, or other fabrication work that is difficult for someone without a kitted-out shop.

Contents:

• 6x striker bodies, 3D printed in steel
• 6x striker posts, milled
• 6x bolt heads, cut
• 6x firing pins, cut
• 6x cam pins, milled
• 1x sear, milled
• 1x cam section, 3D printed in steel
• 6x bolt carriers, SLS printed in nylon

Note: this kit does not include the barrel collar, which is recommended to be printed in a high-temp material like Nylon. This is because the barrel collar must be sized to your barrels.