The P365X pairs the original P365’s short 3.1″ slide with a longer, XL-style grip and an optics-ready slide cut, so you get a fuller grip and more capacity while it still carries like a micro-compact. Shop P365X pistols plus upgrades like extended controls, compensators, and triggers. Since the P365 family shares many parts, check fitment on each product. Compare P365 and P365XL parts, or browse all Sig Sauer pistols and parts.