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PISTOL-CHASSISValue Tier

CAA

CAA MCK for SIG P320

Affordable P320 conversion kit with carbine ergonomics

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Key Highlights

  • Budget P320 chassis
  • No mods required
  • Quick conversion

Specifications

Price
$269
Weight
1 lb 8 oz
Calibers
9mm, .40 S&W, .357 SIG
Rail Type
picatinny

Capability Profile

0-10 Scale Across 8 Axes

Compatibility Tags

family: pistol-chassisfamily: handgunframe: sig-p320interface: picatinny-top

Overview

The CAA MCK for P320 brings the popular conversion kit concept to SIG's modular pistol platform. Like the Glock version, the P320 MCK clamps around the complete pistol without permanent modification, providing stock stability and extended rail space. The P320 can be removed quickly when pistol configuration is preferred.

The P320 MCK accommodates full-size and compact P320 variants, including the popular X-series models. The extended Picatinny rail provides ample space for optics, and the integrated sights serve as backup. The folding stock/brace design keeps the package relatively compact when not in use.

For P320 owners who want to try the chassis concept without committing to the Flux Raider's premium pricing, the CAA MCK offers an entry point. While it lacks the Raider's refinement and purpose-built design, the MCK provides genuine stability improvement at significantly lower cost. Many shooters start with an MCK before deciding if they want to upgrade to a dedicated platform.

Key Features

  • Fits P320 Full, Compact, and X-series
  • No permanent modifications required
  • Folding stock/brace design
  • Extended Picatinny rail
  • Integrated backup sights
  • Quick-release mechanism
  • Thumb rests for improved grip
  • Maintains P320 magazine compatibility

Pros

  • +Affordable P320 chassis option
  • +No modification to P320 required
  • +Quick installation and removal
  • +Works with multiple P320 sizes
  • +Genuine stability improvement
  • +Good entry point for chassis concept

Cons

  • Less refined than Flux Raider
  • Polymer construction
  • Adds bulk to P320
  • Basic included sights
  • Some models have fitment issues

Detailed Specifications

caliber
9mm (P320 determines caliber)
Barrel Length
Uses P320 barrel
Overall Length
20 inches (extended)
weight
24 oz (chassis only)
barrel
Uses P320 barrel
handguard
Integrated polymer
trigger
Uses P320 trigger
msrp
$269

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