The Minimi is light machine gun firing from an open bolt.

Blowback, with an open bolt, it offered good performance and high reliability.

It fires from an open bolt and is gas operated.

It uses an open bolt with a flat pan magazine.

This delay is common with weapons that fire from the "open bolt".

Real smooth, once you get used to the open bolt.

For 1971,the standard rear-end was an open 10 bolt.

It fires belt fed 7.92mm ammunition from an open bolt.

The Owen has a simple blowback design, firing from an open bolt.

The gun fires from open bolt, in automatic mode only.