SIG SAUER P320 Full-Size RXP 9mm Pistol with ROMEO1PRO

Description

SIG SAUER P320 Full-Size RXP 9mm with ROMEO1PRO

The SIG SAUER P320 Full-Size RXP combines a service-size 9mm P320 with a factory-installed ROMEO1PRO reflex sight. Its 4.7-inch barrel, full-length slide, 17-round capacity, and full-size polymer grip are configured for shooters who prioritize sight radius, recoil control, accessory compatibility, and stable handling. The RXP system adds a factory-integrated red dot while retaining tall backup night sights, creating a complete sighting package for training, duty-style applications, competition practice, and home defense.

ROMEO1PRO Installed at the Factory

The included ROMEO1PRO 6 MOA open reflex sight arrives mounted to the pistol rather than being selected and installed as an aftermarket component. The 6 MOA dot provides a prominent aiming reference intended for quick acquisition while remaining useful for deliberate pistol shooting. The optic’s molded-glass aspheric lens and high-performance coatings are designed to provide strong light transmission and a clear image with minimal distortion.

The ROMEO1PRO supplies 12 brightness settings, including 10 daylight settings and two night-vision settings. MOTAC motion-activated illumination powers the dot down when the pistol remains still and restores the previous setting when movement is detected. The optic operates from a CR1632 battery, carries a rated runtime of up to 20,000 hours, and is rated to IPX-7 waterproof performance. Its aircraft-grade aluminum housing helps protect the optical system without adding excessive weight to the slide.

Full-Size Performance and Control

The 4.7-inch barrel and full-size frame give the P320 RXP a longer gripping surface and more forward mass than compact P320 variants. Those dimensions can support steadier recoil management and a consistent two-handed grip during high-volume practice. The 17-round capacity is appropriate for the full-size grip, while the frame’s accessory rail accepts compatible weapon lights and training accessories.

Tall backup night sights remain visible through the optic window, so the pistol retains an independent mechanical sighting system. The ambidextrous slide-catch lever supports operation from either side, and the reversible magazine catch can be configured for the user’s preferred hand. Front and rear slide serrations give the shooter positive gripping surfaces for administrative handling and malfunction-clearing practice.

Modular P320 Architecture

Like other P320 pistols, this model is built around a serialized fire-control unit. Compatible grip modules and factory-authorized components can be changed around that central action when model compatibility and local law permit. SIG’s three-point takedown process is designed to allow routine disassembly without pressing the trigger. The pistol must always be unloaded, the magazine removed, and the chamber visually and physically checked before disassembly, cleaning, storage, or transport.

Consistent Striker-Fired Operation

The striker-fired system provides a consistent trigger action from the first shot through the last. The full-size grip and beavertail area support a high, repeatable firing grip, while the bore relationship and overall mass help the shooter track the sights during recoil. Proper instruction, safe storage, and regular maintenance are essential for any defensive or sporting firearm.

Specifications

• Manufacturer part number: SIG W320F-9-BSS-RXP
• UPC: 798681624447
• Platform: P320 Full-Size RXP
• Caliber: 9mm Luger
• Action: Striker-fired semi-automatic
• Barrel length: 4.7 inches
• Capacity: 17+1 rounds
• Optic: Factory-installed ROMEO1PRO with 6 MOA red dot
• Backup sights: Tall night sights
• Overall length: 8.0 inches
• Overall height: 6.3 inches with optic
• Overall width: 1.3 inches
• Weight: Approximately 29.5 ounces with magazine
• Frame: Black polymer full-size grip module with accessory rail
• Controls: Ambidextrous slide catch and reversible magazine catch

A Complete Full-Size Optics Package

The P320 Full-Size RXP is intended for buyers who want the stability of a service-size pistol and a red-dot sight already integrated into the platform. Its full-size dimensions, 17-round capacity, ROMEO1PRO optic, backup sights, accessory rail, and modular P320 fire-control system create a flexible setup for range development and lawful defensive use. Buyers should verify transfer rules, magazine limits, and other applicable restrictions before ordering.