The HK43 is a rare, early semi-automatic variant of the HK33, produced by Heckler & Koch in the early 1970s as a civilian export model. It shares the roller-delayed blowback action and 5.56mm caliber with its military counterpart but features a push-button magazine release and a permanently attached flash hider to meet US import laws. Extremely limited production, likely under 500 units, makes it a highly collectible firearm.
The HK 41, a semi-automatic variant of the G3, was developed for West German reservists due to legal restrictions on select-fire weapons. Produced from 1966-1977 in 7.62x51mm, it underwent modifications for US import, including a 'shelf' receiver to prevent full-auto conversion. Legal changes in Germany led to its redesign as the HK 91. With only about 400 imported into the US, the HK 41 is a rare and sought-after collector's item.
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