CMT Tactical UPUR-1 Billet AR15 Upper Receiver AR-15 Cross
CMT Tactical UPUR-1 Billet AR15 Upper Receiver AR-15 Cross

CMT Tactical UPUR-1 Billet AR15 Upper Receiver AR-15 Cross

Part Number:UPUR-1
Your Price: $209.95
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CMT Tactical UPUR-1 Billet AR15 Upper Receiver AR-15


The Cross Machine Tool Ultra Precision Upper Receiver Part# UPUR-1 is the perfect premium quality upper for any Mil-Spec lower build.  The UPUR-1 is machined from Billet 7075 T6 Aluminum unlike the more commonly used 6061. Using the 7075 T6 aluminum gives the UP-UR a 65% increase in strength & rigidity over 6061 aluminum receivers. The UPUR-1 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-1 is designed for increased function, performance & to provide an advanced modern appearance & feel to the AR15 platform weapon system.

Now available in enhanced version designed for a .458 SOCOM build by enlarging the ejection port and increasing the wall thickness for greater durability. Still compatible with Mil-Spec AR-15 lowers, and uses standard dust covers, the UPUR-1A is machined from a billet of 7075-T6 aluminum allowing for a custom look and precise dimensions and is much stronger than traditional 6061 aluminum.


  • 5 axis machined from 7075 T6 billet
  • M4 feed ramps
  • Engraved “T” numbers
  • 1913 picatinny Rail flat top
  • Mil Spec Type III class II hard coat anodized Black
  • Shell deflector
  • Forward Assist machined into receiver
  • Dust cover port machined into receiver
  • Increased wall thickness for added rigidity
  • Compatible with Mil spec parts
  • Compatible with most aftermarket handguard/rail systems
  • Lifetime warranty against manufacture defects
  • Comes stripped without dust cover & forward assist assembly
  • Compatible with "Tactical Link" Enhanced Battery Assist Lever, Magpul BAD Lever, or Troy Ambidextrous Bolt Release


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