- MCK 1.0 (Gen 1): Not suppressor compatible.
- MCK 2.0 and 3.0 (Gen 2 and Gen 3): Compatible with suppressors. The front muzzle shroud on Gen 2/3 accommodates suppressors up to 1.38 inches in outer diameter. Larger suppressors will rub or fail to fit inside the shroud.
- MCK 3.0 (Gen 3): Will fit suppressors up to 1.5”
- MCK EVO (4.0): Suppressor-compatible when paired with a 9″ or longer aftermarket barrel for proper clearance. CAA Gear UP has these available for sale.
- We recommend using a suppressor with a booster/Nielsen device to ensure the best level of functionality. Also, using subsonic ammo will help. You may need to do some experimentation if you see failures since all ammo is not created equal.
The Ultimate Guide to MCK Suppressor Compatibility
1. Can you run a suppressor?
Yes, but it depends on your specific Micro Conversion Kit (MCK) version! While original 1.0 (Gen 1) chassis do not support suppressors, the 2.0 (Gen 2), 3.0 (Gen 3), and MCK EVO platforms are engineered to be suppressor-friendly. You simply need to verify your kit’s generation and the outer diameter of your suppressor.
2. Suppressor Diameter Limits
To ensure your suppressor fits safely inside the MCK without making contact with the housing:
- MCK 1.0 (Gen 1): NOT Compatible with suppressor
- MCK 2.0 (Gen 2): Supports suppressors up to 1.38″ in diameter.
- MCK 3.0 (Gen 3): Supports wider setups up to 1.50″ in diameter.
- MCK EVO (4.0): Suppressor-compatible when paired with a 9″ or longer aftermarket barrel for proper clearance. CAA Gear UP has these available for sale.
3. How to Prepare Your MCK for a Suppressor
The MCK Barrel Blast Shield must be adjusted. Here is the typical process for an MCK 2.0/3.0 kit:
- Remove the Barrel Adapter: Use the provided Allen keys to remove the barrel shroud adapter screw/tension block.
- Install the Pistol: Ensure your handgun is equipped with a threaded barrel, thread on your suppressor, and then insert the firearm directly into the Micro Conversion Kit (MCK) chassis.
- Note: Always remember to remove your suppressor before attempting to remove the pistol from the MCK.
- INSERT VIDEO OF SHROUD REMOVAL HERE
4. Sights and Optics
Shooters looking to use tall suppressor-height sights can easily do so with 2.0 and 3.0 (Gen 2 and Gen 3) MCKs, as the housing has been specifically designed to accommodate them.
5. Important Safety Warnings
- No Ported Barrels: Ported or compensated barrels are not compatible with any MCK generation, as escaping gas can damage the kit.
- Fit Verification: Always verify fitment and alignment on an unloaded firearm before taking your MCK to the range.
For exact measurements for your specific model, check out the CAA Gear Up Buyers Guide or read the complete CAA Gear Up Suppressing Your CAA MCK Blog.
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