Blow-forward

The opposite of the blowback, the blow-forward method of operation involves a fixed breech/bolt assembly, with the barrel and chamber being the components that are operated by the force of the expanding gas. Though it produces less recoil than a traditional blowback system, it is unnecessarily complex and not as reliable, and therefore, did not catch on in the world of firearms.

Blow-forward by Anonymous August 10, 2003