Get your golf ball launcher here. Teaser material from the site:

Each launcher fits ANY NATO standard 22mm flash suppressor or grenade launcher.—M-16/AR-15, Yugo SKS, FAL, CETME/G-3, PTR-91, Galil, MAS 49/56, FR-7, FR-8 and many more.

Lot of other interesting stuff on the site too. You can find videos of "reactive target" shooting also and what a one or two pound charge of explosives will do to a car.