Receiver (firearms)

Common card · No. 308825

In firearms terminology and law, the firearm frame or receiver is the part of a firearm which integrates other components by providing housing for internal action components such as the hammer, bolt or breechblock, firing pin and extractor, and has threaded interfaces for externally attaching ("receiving") components such as the barrel, stock, trigger mechanism and iron/optical sights. Some firearm designs, such as the AR-15 platform, feature receivers that have 2 separate sub-assemblies called the upper receiver which houses the barrel/trunnion, bolt components etc and the lower receiver (trigger mechanism housing in some cases) that holds the fire control group, pistol grip, selector, stock etc. In several court cases beginning in 2014, ATF claimed the lower of a Glock or AR-15 was the frame or receiver and the court ruled it didn't meet the legal definition. Despite this, the definition hasn't been corrected since 1986, but people are still being criminally charged. The receiver is often...

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