We looked at doing them about 2 years ago, even did some preliminary work, but this is the exact reason we decided to not go forward- the amount of work and money that would go into the project to design and manufacture the barrel extension, barrel, and relatively complex gas block vs. the actual number we would have sold, plus the inherent risk of essentially having to engineer it from scratch just didn't ultimately make economic sense.

Sven
Manticore Arms