Sig Sauer P320 Full-Size RX 9mm, 4.7 in Barrel, Striker-Fired, 17+1, Factory RX Optics Cut with APEX Plate, Black
This Sig Sauer P320 Full-Size RX stands out with a factory RX optics-milled slide fitted with an APEX-marked optic cover/adapter plate. It pairs a 4.7 in barrel and 17+1 capacity with the modular P320 FCU design and a no-external-manual-safety configuration. Front and rear cocking serrations, fixed sights with a white-dot front blade, and an integral 4-slot M1913 rail round out a capable, USA-made setup. The factory case label is dated March 10, 2017, and two factory 17-round magazines are included.
The RX slide cut provides a clean, factory-machined mounting interface, while the installed APEX cover/adapter plate keeps the system protected and ready for the configuration you choose. Fixed iron sights include a front blade with a single white dot and a rear square-notch in a dovetail, with an approximate 6.6 in sight radius.
The full-size configuration uses a 4.7 in barrel and 17+1 capacity in 9mm Luger. It is striker-fired and built around Sig Sauer’s modular P320 FCU architecture, allowing the fire control unit to be the serialized component. This model has no external manual safety.
The black polymer frame features textured polymer grips for secure handling and an integral 4-slot M1913 accessory rail for lights or lasers. The slide is finished in black with front and rear cocking serrations.
Manufactured in the United States and marked EXETER, NH, this pistol is identified by mfg part number 320F-9-BSS-RX. The factory case label is dated March 10, 2017. Two factory steel 17-round magazines marked "MADE IN ITALY" are included.
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: There are some minor scratches and blemishes present.
What’s Included
- SIG Sauer factory hard case with matching serial label (320F-9-BSS-RX)
- SIG Sauer P320 owner's manual and literature
- SIG Sauer logo patch (packaged)
- SIG Sauer cable lock (sealed package)
- APEX optic cover/adapter plate installed in slide RX cut
- Two 17-round factory steel magazines marked "MADE IN ITALY" with witness holes




