Roboman Plunger Tube Compatibility Part - Caliburn (U-Channel)

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Replaces the Coupler and Front_Butt pieces of the U-Channel version of the Caliburn to enable you to use the Roboman Caliburn Plunger Tube set.

Since the C4 has done away with the larger diameter PVC Pipe for the stock spacer, these pieces is necessary in order to fit the smaller diameter rear spacer tube on older versions of the Caliburn.

Only includes printed parts. No hardware is included.