The SIG Sauer P320 Compact is a modular, striker‑fired 9mm compact built for reliability and state‑compliant carry. Sporting a 3.9″ carbon‑steel barrel and an optic‑ready slide with SIGLITE night sights, the P320 Compact balances concealability with a full‑featured control set — including a manual safety (MS) for Massachusetts compliance, an M1913 accessory rail, and the familiar P320 modular grip system. The pistol ships with two 10‑round steel magazines (10+1 capacity), wears a durable Nitron/DLC finish on the slide, and offers the ergonomics and trigger feel shooters expect from the P320 line in a compact, duty‑capable package