Zeiss UV-Planar f2/62mm Lomo Уфар-12 f2.5/41mm Lomo Зуфар-2 f4.0/350mm Lomo ZIKAR-1A f1.2/100mm Nikon UV Nikkor f4.5/105mm Zeiss UV-Sonnar f4.3/105mm CERCO UV-VIS-NIR f1.8/45mm CERCO UV-VIS-NIR f4.1/94mm Steinheil Quarzobjektiv f1.8/50mm Pentax Quartz Takumar f3.5/85mm Carl Zeiss Jena UV-Objektiv f4/60mm In firearms terminology, 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. Ammoland.com, the web’s leading Shooting Sports News Service for the Ammunition, Firearms, Shooting, Hunting and Conservation community.