C.O.P. C4 Upper Receiver, Full Kit - FDE Cerakote

Aero Precision C.O.P. C4 - FDE Cerakote

C.O.P. C4 Upper Receiver, Full Kit - FDE Cerakote Product Sku: APAR150204F

Out of stock


The C.O.P. C4 (Continuous Optics Platform) features a custom configured integrated upper receiver and handguard system. This extremely rigid design allows for symmetrical or asymmetrical rail platforms to accommodate a multitude of optic requirements. The hand guard system allows for a free-floated barrel giving the operator superior performance and accuracy.

The carbine length C.O.P. (C4) features a handguard that is properly sized to meet up with an A2 Front Sight Block when used with a carbine length gas system. It will cover the gas block when used with pistol length gas system and low profile gas block.

This system uses any standard AR-15 barrel, not a proprietary barrel system. The receiver design also has a fully enclosed dust cover pin which can be removed with the barrel in place.


  • Compatible with Mil - STD AR15 components
  • 7075-T6 forged aluminum construction
  • Extremely rigid user configurable rail system
  • Free-Float handguard rail system
  • AR-15 Standard Barrel Interface, only the barrel nut and wrench are changed (both included)
  • Fully enclosed dust cover pin which can be removed with the barrel in place.
  • Dedicated thumb perch for improved ergonomics when gripping the magwell with the weak hand
  • All kit components made in the USA


  • 2ea 1913 Half Rail
  • 2ea 1913 Rail
  • 1913 Rail with QD
  • 2ea Flat Rail
  • Flat Rail with QD
  • 2ea Quarter Panel
  • T25 Torx Driver
  • 8-32 x 3/8 Screws
  • Barrel Nut
  • Barrel Nut Wrench
  • Factory Installed Dust Cover and Fwd Assist
  • Aero Precision C.O.P. bag roll
  • Installation Manual
Platform AR15
C.O.P. Length C4 (Carbine)
C.O.P. Kit Full Kit
Finish Magpul™ FDE Cerakote
Material Machined from 7075-T6 forged aluminum
Compatibility Works with standard AR15/M16 components
Weight(s) -
Other N/A

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