B-Variant Machined Bolt

(1 customer review)


Adds some “chonk” to your B-Variant bolt handle with solid metal.


– Adds some “chonk” to your bolt handle if that’s what you’re into
– Includes skinny pusher style ramcore with o-ring notch, bolt, and bolt handle.
– Compatible with the most recent version of the B-Variant Caliburn, designed by Steven Rupp, based off of the U-Caliburn by CaptainSlug.
– Includes installation hardware and plunger tube (incase you already glued yours in)
– Compatible with original B-Variant files linked on Thingiverse

Additional information

Weight .5 lbs
Dimensions 7.5 × 4 × 4 in

1 review for B-Variant Machined Bolt

  1. Deric Clarke (verified owner)

    Using AF half lengths and a k25 spring I went from a consistent 215fps to a 225fps. The feel is also nice and I feel more confident putting a heavier spring in the blaster.

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