Replacement for the standard red moderator.
Works with the GAMO Arrow in both .22 and .177 (4.5 and 5.5).

Louder than the original, but increased performance.

Assembly/Replacement guide:

The original insert can be extracted by pressing out the two dowels at the end of the barrel extension. 

At this point the end cap can be taken off which exposes the red insert. Extract this with a pair of pliers or an L shaped Allen key (look up Gamo Arrow disassembly on YouTube if in doubt).

When extracted: Insert the printed compensator with the ports facing towards the holes on the left and right side of the barrel extension. It might need a firm press to seat it properly.