Videos tagged with AR 57

This review details the AR-57 upper receiver, a conversion for the standard AR-15 platform chambered in 5.7x28mm. It highlights the unique top-mounted P90 magazine system and a clever downward ejection modification using a cut Magpul PMAG to catch spent brass. The demonstration confirms the effectiveness of this brass-catching hack.

This guide details the process of building a unique bullpup AR-57 hybrid firearm by combining an AR-15 lower with a REAP Weaponries bullpup kit and a Panzer Arms AR-57 upper receiver. The build utilizes P90 magazines and fires the 5.7x28mm cartridge. The video highlights the experimental nature of such builds and touches upon NFA regulations for SBRs.

This video from DemolitionRanch features an experimental test of custom-made armor plates constructed from .45 ACP bullets and live cartridges encased in resin. The experiment, led by Matt Carriker, assesses the plates' effectiveness against various calibers, including .22 LR, 9mm, 5.7x28mm, 12 gauge buckshot, and 5.56x45mm. While the plates show some success against handgun rounds and buckshot, they are penetrated by high-velocity rifle rounds.