Caliburn Aluminum Coupler Inserts

(1 customer review)


Metal inserts to greatly increase the lifespan on the Nerf Caliburn.

Requires modified coupler print.

This accessory is not compatible with the Caliburn 4 (C4).

Product total
Options total
Grand total


– Precise CNC hole position
– Test firing with k14 (24kg) spring survived repeated dry-firing

Additional information

Weight .0625 lbs
Dimensions 1 × 1 × .5 in
Color of Coupler

3D Solutech Real Black, 3D Solutech Natural Clear, Paramount Graphite Grey, AMZ3D Light Grey, AMZ3D Red, Paramount Iron Dark Red, Hatchbox Orange, 3D Solutech Real Purple, 3D Solutech Apple Neon Green, Hatchbox Green, Paramount Military Green, Hatchbox Blue, eSun Light Blue, 3D Best-Q Metal Light Silver, 3D Solutech Banana Yellow, Tianse Neon Yellow, 3D Solutech Real White, Tianse Gold, 3D Solutech Navy Blue, 3D Solutech Hot Pink, Paramount Military Khaki Tan, None

1 review for Caliburn Aluminum Coupler Inserts

  1. Maximilian Orava (verified owner)

    I had previously broken the original coupler on my Caliburn via dry firing while the slider was back so I was without one for some time. After acquiring a beefier spring, I decided it was best to get a new one to prevent further damage.

    Installing the new coupler was a bit tedious and I warn others who have not replaced a coupler yet that you can in fact lose some vital pieces when swapping it, so be careful. Other than that it shipped quick, is incredibly durable and also took out some bend that I had previously in the back half of the blaster. I recommend this to anyone who wants their Caliburn to have a vastly increased lifespan.

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