Home / Products / Black Rifle Depot / Cross Machine Tool UPUR-1A Big Bore Billet AR-15 Upper Receiver
Cross Machine Tool UPUR-1A Big Bore Billet AR-15 Upper Receiver

Cross Machine Tool UPUR-1A Big Bore Billet AR-15 Upper Receiver

Lowest Listed Price
$198.95
MSRP
$198.95
Savings
See retailer
Retailers Reporting In Stock
0 Stores
Updated
Aug 26, 2026
Compare Deals from 1 Retailers
Sorted by lowest price

Specifications

MPN
UPUR-1A

Description

Cross Machine Tool UPUR-1A Big Bore Billet AR-15 Upper ReceiverLooking for something to change up the standard AR-15 formula? This AR-15 Upper Receiver is compatible with a wide range of parts, so you can build your dream rifle.Features:Machined from billet 7075-T6 aluminumHardcoat anodizedEngraved T-marks and 1913 picatinny railIncreased wall thicknessPrecision cut carrier bore diameter.458 SOCOM sized ejection portNo forward assist or dust coverM4 feed rampsCompatible with Mil-Spec lowers and partsCross Machine Tool Co., utilizing the latest machining technologies, offers high quality products that you'll be excited to own. Cross Machine Tool is a veteran owned business that takes pride in manufacturing products you will own. CMT products exceed military standards, so you can build the best AR style rifle possible.
Stay Connected

Join our newsletter for the latest updates and exclusive deals.

ARMSAGORA

Compare prices on firearms, ammunition, and accessories from hundreds of trusted retailers. Find the best deals, track prices, and build your own loadouts.

© 2026 ARMSAGORA. All rights reserved.
Not an FFL licensed dealer. ARMSAGORA is a product comparison tool.