Staccato C4X HD 2011 9mm Compact, 4 in Integrally Compensated, X Serrations, Carry Magwell, 15+1
This Staccato (STI) C4X HD is a compact 2011-platform 9mm built around a 4 in integrally compensated, ported barrel and a slide with X-style serrations, lightening windows, and a top port. The slide is optic cut with a factory cover plate, and the dustcover carries a three-slot accessory rail. Made in Florence, Texas, it combines ambidextrous thumb safeties, a beavertail grip safety, and a textured polymer grip module with a carry magwell for fast handling.
Condition
Overall Condition: Very good condition, showing only light, superficial signs of prior handling or use.
Bore Condition: Excellent - Clean, mirror finish, no signs of wear.
Bore Rifling: Excellent Rifling - Sharp lands and grooves.
Specific Condition Notes: This firearm is in great shape. There are some minor and superficial scratches and blemishes present. The bore is clean and shiny.
What's Included
- Staccato-branded soft case with molded logo
- Staccato HD Owner's Manual
- 4x 15-round double-stack steel magazines
- Trijicon RMR HD/SRO adapter plate (engraved 'RMR HD/SRO 846')
- Additional optic adapter plate (model not specified)
- Factory optic cover plate installed on slide
The HD-series C4X pairs a compact 2011 frame with a 4 in integrally compensated, ported barrel to reduce muzzle rise while keeping overall length manageable. The slide features X-style front and rear serrations, lightening windows, and a top port for added control and visual signature.
Controls are set up for confident single-action operation with ambidextrous thumb safeties and a beavertail grip safety with a memory bump. A skeletonized, curved trigger supports a precise break, and the carry magwell speeds reloads.
The sighting system uses a high-visibility yellow dot front post and a plain black rear notch for a clear, fast picture. The slide is optic cut and ships with the factory cover plate installed.
Mounting options are flexible thanks to the included Trijicon RMR HD/SRO adapter plate and an additional optic adapter plate. The dustcover integrates a three-slot accessory rail for lights or other rail-mounted equipment.
Capacity is 15+1 in 9mm Luger using double-stack 2011 magazines with steel bodies. The slide is marked STACCATO C4X, and the dustcover is marked 20★11° HD. Manufacturing is in the USA, Florence, Texas.

