The multi-lug rotating bolt as used in a number of semi-automatic firearms today has a significant number of advantages over numerous other designs, to include tilt locking or blowback operated mechanisms. Ability to unlock becomes easier than a standard two lug design, the forces on the lugs are much more evenly distributed, even if one lug does shear off, this might not affect the others during a course of fire. But what are the origins of this design feature that is seen in almost every modern day semi-automatic weapon? Stoner is rightly credited with bringing the concept to fruition, but where did he get it from? Many say Stoner was inspired by Melvin Johnson, but this episode will show that there is actually an 1800s design that features almost identical aspects of the current Stoner piece.

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Hoppe’s No. 9 Gun Bore Cleaner: A favorite since 1903
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