Carl N. Brown
Member
Blowback operated .22s need an extractor to remove unfired rounds from the firing chamber.
Normally, the gas pressure extracts the fired .22 casing and keeps it pressed against the bolt face until the casing rim hits the ejector. The extractor then may give direction to the ejecting casing. (And if the top round in the magazine rides too high it may deflect the ejecting casing but that's different problem.)
Blowback operated .22s have been designed with no extractor. An unfired round is removed by tipping the barrel up and plucking it out with your fingers. Ruger .22 semiautomatic pistols that have lost their extractor will extract and eject ok, until you need to extract an unfired round from the barrel. Then the missing extractor gets noticed. (On the other hand, I had a pawn shop orphan Nylon 66 with no extractor that did not eject consistently until I bought and installed an extractor and extractor spring.)
Big problem I have found with extraction of fired casings in most semi-auto .22s are firing pin dings from dry firing dragging on the casing. Sometimes the edge of the extractor cut in the barrel gets pushed in after lots of impacts by the extractor and drags on the casings.
The breech edges of the ArmaLite and Charter AR7 firing chambers are unnecessarily sharp in my experience. Most other .22 semiauto gun barrels have a slight bevel of the chamber mouth.
Normally, the gas pressure extracts the fired .22 casing and keeps it pressed against the bolt face until the casing rim hits the ejector. The extractor then may give direction to the ejecting casing. (And if the top round in the magazine rides too high it may deflect the ejecting casing but that's different problem.)
Blowback operated .22s have been designed with no extractor. An unfired round is removed by tipping the barrel up and plucking it out with your fingers. Ruger .22 semiautomatic pistols that have lost their extractor will extract and eject ok, until you need to extract an unfired round from the barrel. Then the missing extractor gets noticed. (On the other hand, I had a pawn shop orphan Nylon 66 with no extractor that did not eject consistently until I bought and installed an extractor and extractor spring.)
Big problem I have found with extraction of fired casings in most semi-auto .22s are firing pin dings from dry firing dragging on the casing. Sometimes the edge of the extractor cut in the barrel gets pushed in after lots of impacts by the extractor and drags on the casings.
The breech edges of the ArmaLite and Charter AR7 firing chambers are unnecessarily sharp in my experience. Most other .22 semiauto gun barrels have a slight bevel of the chamber mouth.