About the Sig Sauer M18 Caliber X-Change Kit
Caliber X-Change kit that turns an existing P320 fire control unit into a 9mm M18-style pistol in coyote.
Key Features
- Converts a P320 FCU into the M18 configuration
- 9mm caliber
- Ships with one 17-round and two 21-round magazines
- Coyote finish to match the military-style M18
- No FFL needed — the serialized FCU is not included
Specifications
| Model | M18 |
| Caliber | 9mm |
| Frame Size | Carry |
| Magazines | (1) 17-round, (2) 21-round |
| Color | Coyote |
| Manual Safety | No |
| Serialized | No — kit does not include the FCU (the serialized part) |
| Requires | P320 Fire Control Unit (FCU) |
| Fits | P320 |
| Part Number | 8900268 |
FAQ
What does it fit?
It fits the Sig Sauer P320.
What’s included?
(1) 17-round and (2) 21-round magazines (per Sig description); slide/barrel/grip module assembly
Where can I buy it?
Order online or visit Black Bayou Armory in Benton, LA.
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