SIG SAUER P320 Compact Massachusetts 9mm Optics-Ready Pistol

SIG SAUER P320 Compact 9mm Massachusetts-Compliant Pistol

The SIG SAUER P320 Compact is a versatile, striker-fired 9mm designed for shooters who want a balanced format for training, home defense, and lawful carry. This Massachusetts-compliant configuration uses a 3.9-inch barrel, a compact medium black polymer grip module, and a 10+1-round capacity. It includes two 10-round steel magazines and a manual safety, so the package matches the capacity and control specifications of the exact state-compliant model listed here.

SIG’s P320 design places the serialized fire-control unit at the center of the platform. The compact grip and slide provide a middle ground between full-size handling and easier everyday portability. At approximately 7.25 inches long, 5.3 inches high, and 1.25 inches wide, with a listed weight of 25.8 ounces, this version has enough gripping surface for deliberate range work while remaining manageable for storage and carry in a properly fitted holster.

Optics-Ready Nitron Slide

The stainless-steel slide wears SIG’s black Nitron finish for corrosion and wear resistance. It is factory cut for a compatible optic using SIG’s PRO footprint, allowing the owner to add an appropriate reflex sight without replacing or machining the slide. Optic footprints, screws, and plate requirements can differ, so verify the selected sight’s fit and use the correct mounting hardware and torque specifications before installation.

Front and rear slide serrations create positive grasping surfaces for chamber checks and slide manipulation. The frame also incorporates a Picatinny-style M1913 accessory rail for a compatible light or other properly sized accessory. Any accessory should be checked for secure mounting and for compatibility with the intended holster.

SIGLITE Night Sights and Familiar Controls

This exact model is fitted with SIGLITE night sights. Their tritium inserts provide a visible reference in reduced light without requiring batteries, while the conventional front-and-rear sight picture remains straightforward for daylight practice. They serve as the pistol’s primary sights or as an immediate mechanical backup when a compatible red-dot optic is installed.

A curved striker-fired trigger provides the familiar P320 trigger profile. The manual safety adds a positive, user-operated control for owners who prefer that feature. It should be practiced with consistently so disengaging and reengaging the safety becomes part of safe handling. As with every firearm, a manual safety supplements rather than replaces muzzle discipline, trigger-finger discipline, secure storage, and a quality holster that fully covers the trigger guard.

Compact Capacity and Range-Ready Package

The two included 10-round steel magazines support training and administrative handling without requiring an immediate additional magazine purchase. The compact grip is sized for the matching magazine format and gives the shooter a stable two-handed hold. A 3.9-inch barrel offers a practical balance of compact dimensions, usable sight radius, and ballistic performance from common 9mm defensive and practice ammunition. Ammunition function can vary, so test the chosen load in the individual pistol before relying on it for defensive use.

Key Features

• Caliber: 9mm Luger
• Barrel length: 3.9 inches
• Capacity: 10+1 rounds
• Magazines: Two 10-round steel magazines
• Action: Striker fired with curved trigger
• Safety: Manual safety
• Sights: SIGLITE night sights
• Slide: Optics-ready stainless steel with black Nitron finish
• Grip: Compact medium black polymer module
• Accessory rail: M1913
• Overall length: 7.25 inches
• Width: 1.25 inches
• Height: 5.3 inches
• Weight: 25.8 ounces
• Manufacturer part number: 320C-9-BSSP-MS-MA
• UPC: 798681703340

Exact Variant Identification

This listing is specifically for manufacturer part number 320C-9-BSSP-MS-MA, which may appear without hyphens in distributor data, and UPC 798681703340. These identifiers separate it from standard-capacity P320 Compact pistols and from configurations with different sights, safeties, grip sizes, or optic packages. Confirm the model number and UPC before arranging the transfer.

Firearms must be transferred through a licensed dealer where required. “Massachusetts compliant” describes this factory configuration; it does not replace the buyer’s responsibility to verify current roster status, licensing requirements, magazine restrictions, and other applicable state and local laws before purchase or possession.