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UT Arms 80% Billet AR-15 Lower Receiver

80% Billet AR-15 Lower Receivers have the following features:
*Solid Billet CNC Machined
*EDM Magwell with Larger Flange for easier reloading
*Certified Aircraft Grade 7075-T6 Aluminum
*Individually inspected in house with CMM
*P-MAGS fit the magwell unlike other lowers
* Very easy to finish!
*Can be finished with either a drill press or a milling machine

Milling Machine Tutorial

Drill Press Tutorial
Complete AR-15 Blueprints
Finishing Blueprint 1
Finishing Blueprint 2

Availability: Out of stock

UT Arms 80% Billet AR-15 Lower Receiver
UT Arms 80% Billet AR-15 Lower Receiver

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The best 80% receiver in production! Each lower is fully CNC machined from a 15 lb 7075-T6 aluminum billet on a CNC horizontal machining center at an ISO 9001 certified factory. No highly stressed and inaccurate forgings are used. Every surface of the lowers is machined. The lower maintains close tolerances on all features to ensure a perfect part every time. The magazine well is EDM machined out to ensure no mismatch from milling and broaching. The magazine well also had a much larger flare than a typical forged receiver for quicker more reliable reloading. Finally, the lower receivers are tested for dimensional accuracy on a Zeiss UPMC Ultra CMM The quality and attention to detail are second to none.

Additional Information

Item Number ar-15-80-billet
Weight (lbs) 3.0000