The SIG Sauer P320 is a striker-fired polymer frame pistol that features a distinctive modular design. This offers the user the flexibility to change between calibers (9mm, .357 SIG, .40 S&W, .45 ACP), frame sizes (full-size, carry, compact, subcompact), and grip modules (small, medium, large). Users do not have to pull the trigger or use a special tool to take down the firearm for cleaning or routine maintenance. The P320 is designed with a partially pre-tensioned striker, resulting in a short, crisp trigger-pull with a quick, pronounced reset.
The ACSS Aurora reticle is Primary Arms' very first foray into meter-based ranging and fire solutions.