[McKee]

Not sure if there is a thread around but a warning about a few compatibility issues i've run into lately.

1. The madbull python (black) 6.03mm inner barrels do not fit snugly in the new modify accurate hop up chamber. The barrels outer diameter is somewhat smaller than that of other brands, including stock barrels, causing it to shift and will lead to inconsistent shots and possibly damaged rubber.

2. ARS hop-up rubbers dont work well with mad-bull ultimate hop up chambers. They will jam and fail to feed. I have tried this with two different types of inner barrel (promethius and mad bull) as well as two different ultimate hop up chambers, both yielding the same result.