In this Build Box Bonus, Chris Cerino walks through a common AR lower upgrade - replacing the Mil-Spec bolt catch with an upgraded aftermarket. This Build Box Bonus is brought to you by Brownells.
Build Box is the ultimate competitive gun-building show. Each week, contestants will be challenged to compete with each other, the clock, and themselves, while winning over the judges in a pressure-packed environment. From subsonic adaptations and competition conversions to pistol perfection and modern hunting rifles, Build Box is the ultimate test in gun-build mastery.
More information on Build Box here: buildboxtv.com
Catch Build Box on Outdoor Channel, Wednesday 7:30 PM EST, Wednesday 10:30 PM EST, Thursday 4:30 AM EST, and Tuesday 3:30 PM EST.
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Additional product support from: Ammunition Depot, Black Hills Ammunition, Bushnell, ERGO Grips, Faxon Firearms, Leupold, Luth-AR, Magpul, SB Tactical, Vortex Optics and XS Sights.
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