Not really, if it's semi and you're doing a sniper setup, and you're getting say 50 "good" shots per 12gr CO2 powerlet (they claim 70-80, I'd say that might be optimistic, specially if you're shooting 400-ish), it's useable.
OTOH, people using a FSBE AAV could use a small CO2 bottle disguised as a HABD bottle :lol:
