SMC Charlie Modular Chassis (Frame)
The next evolution of the Strike Modular Chassis for SIG P320, the Charlie frame delivers maximum modularity and real-world usability. Run it as-is, or expand with the optional Top Picatinny Rail and Extended Charging Handle. A built-in blast shield, full-length 6 o’clock accessory rail, and integrated flared magwell make the Charlie a versatile foundation for duty, range, or sci-fi-grade fun.
Frame Features
- Built-in blast shield with full-length 6 o’clock accessory rail
- Integrated flared magwell for faster reloads
- Picatinny backstrap for folding stocks/stabilizers (single or dual FSA)
- (2) anti-rotate QD sling points; also supports loop-through lanyard
- Optional ecosystem: Top Picatinny Rail, Extended Charging Handle, Extended Trigger Guard
Fitment & Notes
- FCU: All SIG SAUER P320 FCUs, including XSeries and M17/M18 (manual-safety usable; chassis includes a guided notch location for required modification)
- Calibers: 9mm / .357 SIG / .40 S&W
- Triggers: Optimized for SIG OEM triggers (aftermarket trigger function not guaranteed)
- Slide lengths: Works with all P320 slide/barrel lengths; best matched with 4.7" full-size. Not recommended with Compact/Carry 3.9" threaded or shorter setups even with a compensator
- Magazines: P320 17-, 18-, 21-round and full-size 10/17-round magazines
- Holsters: Not holster compatible (even if Extended Trigger Guard is removed)
Not Compatible
- .45 ACP or 10mm FCUs/calibers
- Compact 15- and 10-round magazines
- SMC Alpha Comps and SMC Blast Shields (Standard/Hyper)
- Ambi Side Charging Handle (use the Charlie Extended Charging Handle)
