I have for sale a grenade laumcher for the Mauser K-98 rifle. This launcher clamps on behind the front sight with a quick connect screw-down locking system. it is all original and is in great condition. The rifled barrel unscrews from the launcher but doesn't seem to want to unscrew. I didn't want to try and force it because I thought I might mark it up. I've had other collectors tell me it's no problem just to put a wrench on it but I didn't want to do that. I want $500.00 shipped for this one.