Stoner 63, 63A, & Mk23: History and Mechanics
The Stoner 63 system, designed by Eugene Stoner, was a highly modular firearm capable of multiple configurations including rifle, carbine, and various machine guns. Initially developed as the Stoner 62 in 7.62 NATO, it was scaled down to 5.56mm as the Stoner 63. Despite its innovative design and light weight, particularly favored by the US Navy SEALs as the Mk23, it suffered from reliability issues and high maintenance requirements in demanding environments like Vietnam.









