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Primary Weapons Systems Compound
California Proposition 65 Warning

This product can expose you to chemicals including lead, known to cause cancer and birth defects. For more info visit P65Warnings.ca.gov.

Primary Weapons Systems

Compound

$2,067.95
$1,949.95
Sale Price
Out of Stock

Primary Weapons Systems Compound, Semi-automatic Rifle, AR-15, 223 Wylde, 16.1" Barrel, 1:8 Twist, FRC 2 Port Muzzle Device, MLOK Handguard, Anodized Finish, Black, Magpul Stock, Magpul Grip, 1 Magazine, 30 Rounds MK1-CPP-223-16

Key Details
Brand Primary Weapons Systems
Manufacturer Part Number MK1-CPP-223-16
UPC 811154033185
SKU PWSMK1-CPP-223-16
Current Stock 0 available
Quantity Updated May 15, 2026 7:20 AM
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Purchase Requirements
  • This product requires FFL processing before pickup or transfer.
  • Age verification is required before checkout completion.
  • California compliance or distributor restriction review may apply.
  • Final availability is confirmed at checkout.
In-Store Pickup Required: All firearm purchases must be picked up at our Beverly Hills location after background check completion.
Product Description

Primary Weapons Systems was formed by firearm enthusiasts in 2008. Starting out by producing muzzle devices, they tested their compensators on all different types of rifles - from M4s to AK-47s. After using both styles of rifles in testing with high round counts, the difference in maintenance needed was both astounding. From that basic realization, the PWS long-stroke piston system was born; keeping the core values of the AR-15 design, while also lessening the need for maintenance in high-volume fire situations and adverse conditions. The Compound Rifle is a combination of a Mod 1 upper, with the Mk1 Mod 2 Lower.

Features
  • Operating System: PWS Long Stroke Piston System, 3 setting Adjustable Gas Regulator
  • Caliber: .223 Wylde
  • Barrel Length: 16.1";Gas System Length: Mid-Length"
  • Barrel Twist Rate: 1:8
  • Muzzle Velocity: 2980fps
  • Muzzle Device: PWS FRC 2-Port Compensator
  • Upper Receiver: PWS Proprietary Piston Upper, T6 7075 Forged, Anodized
  • Handguard: PWS M-Lok 15.05 Handguard (1.7" width, 2.25" height)"
  • Charging Handle: Radian Raptor Ambidextrous Charging Handle
  • Lower Receiver: PWS ambidextrous MK1 MOD 2-M Multi-Caliber Lower, T6 7075 Forged, Anodized, AR-15 Compatible
  • Trigger: Mil-Spec Enhanced, PTFE Coated.
  • Trigger Pull Weight: 5.5 6.5 lbs.
  • Buffer Tube: PWS Enhanced Buffer Tube with ratchet lock castle nut and end plate set with built-in QD mount
  • Buffer: PWS Enhanced H2 Steel Body Buffer
Specifications
UPC: 811154033185
Manufacturer: Primary Weapons Systems
Manufacturer Part #: MK1-CPP-223-16
Model: Compound
Action: Semi-automatic
Barrel Length: 16.1"
Capacity: 30 Rounds
Finish: Anodized
Grips: Magpul
Type: AR