This guide details the installation of a Lyman Model 66 LA receiver peep sight and a Marble rear slot blank on a Marlin 336 lever-action rifle. It covers removing the old sight, fitting the new blank using filing techniques, applying cold bluing for rust prevention, and mounting the peep sight. The process emphasizes careful alignment and fitting to ensure proper function and a clean aesthetic.
This video details the process of hand-fitting an undersized Bushmaster AR-15 magazine well that caused magazines to stick. After approximately three hours of careful file work, the instructor was able to enlarge the magazine well sufficiently for most magazines to drop free, even though it did not meet USGI gauge specifications. The process emphasizes iterative testing with various magazines to achieve reliable function.
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