The Cross Machine Tool Ultra Precision Upper Receiver Part# UPUR-4 Slick Side upper with Dust Cover port is the perfect Mate to your UHP-15 lower receiver or would also be a great match with any Mil-Spec lower. The UPUR-4 is machined from Billet 7075 T6 Aluminum unlike the more commonly used 6061. Using the 7075 T6 aluminum gives the UPUR-4 a 65% increase in strength & rigidity over 6061 aluminum receivers. The UPUR-4 is machined on a 5 Axis machining Center to reduce the number of operations/setups required to complete. This machining process allows the highest possible accuracy to be obtained over the traditional 3 or 4 Axis machining method. The UPUR-4 is designed for increased function, performance & to provide an advanced modern appearance & feel to the AR15 platform weapon system. The UPUR-4 is a Precision upper great for a Precision long range rifle build or for a more minimalistic build approach.
5 axis machined from 7075 T6 billet
Engraved “T” numbers
1913 picatinny Rail flat top
Mil Spec Type III class II hard coat anodized Black
Increased wall thickness for added rigidity
Compatible with Mil spec parts
Compatible with most aftermarket handguard/rail systems
Weighs 7.5 ozs
Lifetime warranty against manufacture defects
Compatible with "Tactical Link" Enhanced Battery Assist Lever
Does include dust cover port machined.
NO forward assist or Shell deflector
Available with or without M4 feed ramps or 458 SOCOM port size. Must choose which model you want in order to "add to cart" If the model you want is not shown, it is currently out of stock.
Tn. Residents will have 9.75% sales tax added to order.