Cross Machine Tool 16" 300 BLK 1:7 Carbine Length Complete Upper

SKU: 300-UPR-16
MPN: 300-UPR-16
Manufactured by Cross Machine Tool


In Stock

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Cross Machine Tool Co., utilizing the latest machining technologies, offers high quality products that you’ll be excited to own.

The CMT UPR 16 Complete Upper Receiver offers reliability and durability in a battle ready package. Crafted from the highest quality components, this upper is assembled by Veteran armorers, head spaced and test fired to ensure proper function.

Featuring a full-length Picatinny top rail to provide space for forward mounted lights, NV/IR optics, or laser designators. M-LOK slots at the 3, 6, and 9 o'clock positions offer plenty of room for further expansion.

  • 16” 41V50 chrome moly vanadium steel barrel
  • Chrome lined with a salt bath nitride finish
  • Chambered in 300 AAC Blackout with a 1:7 twist rate
  • Carbine length gas system
  • CMT UHPR 13.7” HDX M-LOK Rail
  • CMT CRC muzzle brake
  • CMT Nitrided M16 BCG
  • CMT Charging handle
  • CMT Low profile gas block pinned to barrel
  • 5-axis machined 7075-T6 billet upper receiver
  • 6000 series extruded aluminum rail
  • QD sling sockets
  • Inside diameter: 1.315”
  • Made in the U.S.A.


Barrel Length16
Barrel Material41V50 Chrome Moly Vanadium Steel
BrandCross Machine Tool
Caliber Gauge300 BLK
Gas System LengthCarbine
Gas System TypeDirect Impingement
Muzzle DeviceMuzzle Brake
Twist Rate1:7

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