This is a buffer tube plug that adds a picatinny/1913 rail for alternative stock mounting on an airsoft or dedicated 22 lower.

It is based off the BoreBuddy design.

I used the threads from this plug (www.thingiverse.com/thing:2258017).

Installation:

Using a 6mm allen wrench, screw the threaded Plug into the lower until the back of the plug is flush with the back of the lower.

Insert the M3 nuts into the back of the Endplate.

Using the M4, attach the Endplate to the plug.

Using the M3's, attach the Rail to the Endplate.

Hardware requirements:

2x Flat head M3 x 13mm

1x Socket head M4 x 15mm

Update 08/10/2021:

Added a V2 Endplate that allows the use of metal endplates.

Added a hole in the Rail so that the Endplate can be removed from the Plug without removing the Rail.

Update 08/14/2021:

Updated EndplateV2 to keep it from catching on the charging handle.