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Compared to a Closed Bolt design, open bolt weapons generally have fewer moving parts. The Firing Pin is usually part of the bolt, saving on manufacturing costs. Having an open chamber while not firing also helps keep the weapon cooler. However, accuracy suffers due to movement of heavy parts prior to firing, and lack of full lock up between bolt and barrel. OPEN BOLT WEAPONS MIXED MODE WEAPONS NOTES In the U.S. , the ATF made a ruling in 1982 that semi-automatic open bolt weapons are readily convertible to fully-automatic fire, therefore such weapons manufactured after the date of this ruling are classed and controlled as fully-automatic weapons (weapons manufactured prior to the ruling are grandfathered and are still considered semi-automatic). SEE ALSO |
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