When Sig Sauer released the P365 in 2018, fitting 10 rounds of 9mm into a 17.8 oz frame measuring 5.8" overall seemed impossible. The design forced every other manufacturer to redesign their micro-compacts, producing the Springfield Hellcat, Ruger MAX-9, and a dozen others trying to match or beat the capacity-to-size ratio. The P365 created the modern micro-compact category.

The gun ships with XRAY3 day/night sights on both front and rear, a feature most competitors either omit or charge extra for. The stainless steel slide with Nitron finish is durable, and the 5.5 lb striker-fired trigger is predictable. Two 10-round magazines come in the box. At 1.06" wide and 4.3" tall, it conceals under a t-shirt in an IWB holster without printing.

Competitors now match or beat the P365's 10-round capacity. The S&W Shield Plus holds 13 rounds. The Hellcat holds 13. The Ruger MAX-9 holds 12. But the P365's aftermarket ecosystem for grip modules, magazines, and trigger kits remains deeper than any other micro-compact, and the optional 12-round and 15-round extended magazines let owners scale capacity up when concealment requirements allow.