【D.craft】BARREL EXTENSION type1 's Japan Review

I get the impression that it applies more strongly than type 2.
I'd recommend it to anyone who likes sharks and the like.

It is used for DMC's Butrus series. The center of gravity and gravity can be changed freely. It is a great match with the Batlas series.
DMC's barrels are short and classic barrels, so it fits well. If you are concerned about loosening, you must take measures with O-rings or substitutes.
Even considering that, it is worth buying.