– K14 spring
– K14 compatible plunger with o-ring
– K14 compatible frontbutt8
– K14 compatible rearbuttR with reinforcing hardware
*Note: All of our Caliburn kits, assembled Caliburns, and replacement plungers are already K14 spring compatible.
**The discontinued sear6 piece is NOT compatible with the K14 spring. If you are using a sear6, you will need to also purchase the current sear5 available here: https://blogderrikksun.com/product/caliburn-replacement-sear/. The difference is sear6 is taller than sear5.
***warning, due to high amounts of stress on printed parts, Caliburn lifespan greatly reduced with use of k14 spring and no warranty available.
Original design by captainslug on Thingiverse. Used under proper license.