Videos tagged with Magazine Well Gauge

This comprehensive inspection of multiple Smith & Wesson M&P 15 Sport II rifles reveals a range of manufacturing and assembly issues. The video details checks for bolt lock, magazine release function, magazine well dimensions, selector engagement, forward assist operation, muzzle device alignment, receiver extension alignment, rail screw torque, takedown pin bores, gas block screw torque, barrel extension alignment, buffer spring length and compression, gas port alignment, headspace, trigger pull weight, castle nut torque, and carrier key alignment. Several firearms exhibited problems including sticky magazine releases, tight magazine wells, misaligned muzzle devices, clocked receiver extensions, undertorqued rail screws, loose gas block screws, short buffer springs, and loose castle nuts.

This video provides a physical inspection of a blemished Knight's Armament SR-15 non-ambidextrous lower receiver. The inspection focuses on dimensional accuracy and cosmetic defects using various gauges. While minor cosmetic flaws are present, the receiver largely passes functional gauging, with the exception of slightly oversized hammer and trigger pin holes.

This video provides a detailed physical inspection of a Geissele Super Duty AR-15 lower receiver, demonstrating how to use various gauges and tools to check critical dimensions and tolerances. The inspection covers the magazine well, receiver extension threads, lug wells, selector detent, pin holes, and sidewall consistency. It also includes a test for upper receiver fitment, highlighting the importance of precise manufacturing for optimal firearm function.