thumper n. a grenade launcher; (hence) a gun known more for its power or noise than for its precision; any gun. (source: Double-Tongued Dictionary)
thumper n.— «Originally the designers wanted to mount a “long tom” or a “thumper” as the mech’s “main gun” but these proved far too “large” so they settled for the Schlong 2,000 Large Pulse...
thumper n.— «They key to shooting any powerful gun, and especially a thumper, is to roll with it, not fight it.» —“Re: HARD KICKING 45-70’s & 444 Marlins” by Ken Marsh (kmarsh@charm.net) Usenet: rec.guns June...
saw n.— «Brooker manned the .50-caliber machine gun while Sgt. Patrick Hock of Port Orchard operated the M249s, also known as “saws.”» —“Assertive driving is road to survival for Humvees” by Adam Lynn in...
limb hanger n.— «I didn’t even have to move the gun, just knocked it off safe and dropped him in his tracks. He scored 18 lbs, 10″ beard, and 1 1/2″ spurs. A real limb hanger!!!» —by Gary Caughman Tomturkey’s Web...
gun-grabber
n.— «(article title)» —“Letter to a Gun-Grabber: The Wrath To Come” by Victor Milan The Libertarian Enterprise Dec. 1, 1996. (source: Double-Tongued Dictionary)