Black Powder Golfball Launching Cannons - American Cannons
Crazy Golfball Cannon : 6 Steps - Instructables
FREE Air Cannon Plans: "Build it Yourself"
Air Cannon Plans | Air Cannon Kits | American Air Cannon | Air Cannon Supplies | Air Cannon Plans - Air Cannon Plans | American Air Cannon | Compressed Air Cannon | Air Cannon Kits
NcStar AR-15 Golf Ball Launcher - YouTube
Strike Industries Announces the OPPRESSOR Golf Ball LauncherThe Firearm Blog