5KU PBS-1 / PBS-3 spitfire tracer cap
thingiverse
Older 5KU PBS-1 and PBS-3 don't come with a vented front cap for you to use front-facing tracer units to emulate that flash effect. Do note that this part is mostly redundant but I made it because I do have several older 5KU replica PBS lying around so might as well repurpose them. v2 has knurling and is extended for tool-less removal
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