UPDATED 1-4-2022

I have now updated the case to what i believe may work better for most people.

• Increased lid clearance by 0.75mm
• Increased the chamber section of the bolt from 8.5mm to 9.8mm (0.334" to 0.386")

NOTE: I have not printed Version 2 of this case. There shouldn't be any issues but you know how the game goes. If someone tries the newer version i'm sure everyone would like to see if some issues were resolved for future printers. -Kyle

p.s. i am also attaching the original Fusion 360 files for editing at your free will.

p.p.s the larger the layer height you use the more difficult the lid is to remove.(on old version) id recommend 0.2mm or less.

General Description:

This is a case that will hold the CMMG 22LR conversion bolt for an AR-15. It also doubles as a regular Bolt carrier group case as well. The Bolt is almost a perfect fit and very little wiggle room. If you want more clearances for the bolt you can scale it up 1-2% but you have to do this to the lid as well or they wont fit right.

Printing:

The print for both the lid and the base will take roughly around 16 Hrs.
at a resolution of 0.2mm. No supports are needed. I recommend a wall thickness of 1.5mm - 2mm. The base is designed as a solid part. The infill i used is 20%. MAKE SURE IT STICKS TO THE BED WELL. This is a long skinny part so it can warp if easy if it isn't stuck down good. I have a glass bed and use regular glue sticks.

This Box was designed in Fusion 360, if you have any other improvements send me a comment.