blowback gun

blowback gun

[′blō‚bak ‚gən]
(ordnance)
An automatic gun utilizing the pressure of the propellant gases to force the bolt to the rear, independently of the barrel which does not move relative to the receiver.
References in periodicals archive ?
His conversion isn't a blowback gun, but rather a direct gas impingement design, and he kept the standard bolt/carrier configuration.
What do you do if you want neither the moving barrel, links and lugs of a conventional locking system, nor the violent kick of a straight blowback gun in 9mm Luger?
Since the 1911-22 is a blowback gun, the barrel does not move in recoil, but neither is it permanently mounted to the frame--in fact, the pistol field-strips just like any other M1911, down to the barrel bushing.
With some blowback guns this would be a big deal but, frankly, it was no trouble to shoot from either side with the brass ejecting in front of your face.