This lower is designed to work with a standard ar15 upper reciver with rear charging handle and forward assist.
It requires
-1x AR FCG
-1x carbine buffer tube kit (no castle nut or back plate)
-1x buffer detent and spring
-1x usgi mag release
-1x bolt hold open
-1x 3-48 1.5” screw (for pinning the bolt hold open in place)
-4x 6-32 2” socket head screws (for reinforcing back section)
-1x 6-32 1” socket head screw (for reinforcing the pistol grip)
-1x 8-32 square nut and 5/8” 8-32 socket head screw (for indexing the buffer tube)
-2x ¼” 1.5” long screw posts or hitch pins
File | Extension |
---|---|
Chonkyboi lower milspec upper.stl | stl |
Version: 1.0.0 latest
Initial release
This lower is designed to work with a standard ar15 upper reciver with rear charging handle and forward assist.
It requires
-1x AR FCG
-1x carbine buffer tube kit (no castle nut or back plate)
-1x buffer detent and spring
-1x usgi mag release
-1x bolt hold open
-1x 3-48 1.5” screw (for pinning the bolt hold open in place)
-4x 6-32 2” socket head screws (for reinforcing back section)
-1x 6-32 1” socket head screw (for reinforcing the pistol grip)
-1x 8-32 square nut and 5/8” 8-32 socket head screw (for indexing the buffer tube)
-2x ¼” 1.5” long screw posts or hitch pins
5K
487
Sep 09, 2022
3D Printer
United States
English
No license
File | Extension |
---|---|
Chonkyboi lower milspec upper.stl | stl |
Version: 1.0.0 latest
Initial release
The files shown on this site are only available to U.S. Persons, as defined at 22 C.F.R. 120.15. The files are also not available to persons outside the United States or to residents of and persons in the State of New Jersey, with the exception of Federal Firearms Licensees.