Hello there,

Custom bolt knobs for SRS in Long, medium and short variants.

Let me know what can be improved or what shape you'd like to see.

My personal fav is Medium v2 - for SBA M140 and M170 springs, and for Rapax 3j+ which i'm using most, because of grip comfortability and being so close to cylinder which make pull easy and “healthy” for Your cylinder itself :)

Medium variants have thread moved more to the inside, what makes it's easier to cock the bolt.

Short variants seems bit too small for me, and long ones seems to have bad leverage for my cylinder.

Printed with PLA as well as ASA with 3 shells. Works fine in both cases and did not break in any way since first testing.

credits to user 03_mxtthew_03 for thread part, which fits perfect-tight

Print Settings

Resolution:

0.2

Infill: 

10% Gyroid

Filament: Any PLA / ABS / ASA Any