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.
This video provides a practical demonstration and explanation of the D'Aguanno AR-15 Receiver Raceway Fixture by Guntech Steve Ostrem. It highlights the fixture's versatility, showing its use in various AR-15 build tasks such as installing handguards, forward assists, dust covers, optics, and tactical accessories. The fixture is also useful for torquing barrel nuts and muzzle devices, and uniquely allows for gas tube installation without removing the upper receiver. The video emphasizes the tool's simplicity and practicality for AR builders.
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