The Sig Sauer P320 RXP Compact is a striker-fired 9mm pistol built on the modular P320 platform, factory-fitted with a slide-mounted ROMEO1 PRO reflex optic and SIGLITE suppressor-height night sights that co-witness with the dot. It has a 4.7-inch barrel and a 15-round magazine, and it ships in an LE/MIL/IOP configuration for qualified purchase channels. 
 

Key Specifications 

• Brand: Sig Sauer 
• Model: P320 RXP Compact 
• Caliber: 9mm 
• Barrel Length: 4.7 in 
• Capacity: 15+1 Rounds 
• Finish: Stainless/Silver 
• Action: Semi Auto 
   

Detailed Features 

• Factory-mounted ROMEO1 PRO reflex optic for a ready-to-shoot, optics-first setup 
• SIGLITE suppressor-height night sights co-witness with the slide-mounted optic 
• Striker-fired trigger on the modular P320 platform 
• LE/MIL/IOP designation makes it eligible for qualified law enforcement, military, or first responder purchase channels

Owners of the P320 RXP Compact generally report that the platform runs reliably straight out of the box, and having the ROMEO1 PRO mounted from the factory removes a step that a lot of shooters would otherwise handle themselves. The suppressor-height SIGLITE night sights co-witnessing through the optic window is a detail people notice right away, since not every factory-optic setup gets that right.

Handling opinions vary with hand size. Some shooters like the modular P320 grip module and find the trigger easy to work with for carry or duty use; others feel the grip could stand to be slimmer for smaller hands, a common complaint across the P320 line rather than something specific to this variant. The LE/MIL/IOP designation matters mainly to buyers going through qualified purchase channels rather than to how the gun shoots.

On value, buyers weigh the RXP Compact against building an optic-ready P320 from a base model themselves. Most conclude the factory package saves money and hassle if the ROMEO1 PRO is the optic they wanted anyway, while shooters set on a different red dot sometimes prefer buying the milled-slide version separately.