This video provides a product spotlight on the Mk3 Device Lite, an AR-15 receiver fixture from The Device Mfg., presented by Brownells Gun Tech Caleb Savant. The Device Lite is a two-piece tool designed to securely hold an AR-15 upper receiver in a bench vise, facilitating various gunsmithing tasks. It supports the receiver internally, mimicking the bolt-carrier group and charging handle, which is particularly beneficial for barrel nut installations, forward assist and ejection port cover mounting, and optic installation. A bonus feature includes a slot for setting up M-LOK accessories. The fixture is constructed from 6061 T6 aluminum to prevent damage to the receiver's harder 7075 alloy.
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