The HK4: H&K’s First Pistol (Four Calibers, One Gun)
By Alex C.
Heckler and Koch made a name for themselves when they began producing rifles, but in the mid 1960s they decided to expand their product line to include pistols. The result was a caliber convertible, small handgun that could fire .380, .32, .25, and .22 cartridges by having the end user do a quick conversion. The […]
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Source:: The Firearm Blog