Every part, every price

The slim, optic-ready 10+1 single stack that became the default modern carry gun — and the canvas for this entire build.

The carry-sized red dot that made pistol optics normal — multi-reticle, shake awake, and priced like it isn't premium.

500 lumens purpose-built for slim frames, with a rear switch you can actually reach without breaking grip.

A single-port comp that flattens the 43X's snappy impulse without turning it into a fireball.

416R stainless, 1/2x28 threaded, gold TiN finish. Enables the comp and looks unapologetically expensive.

A flared magwell that funnels reloads without adding meaningful printing width.

15 rounds in a 43X-sized magazine. A 50% capacity increase for under $50 — the single best upgrade on this list.

The $25 steel part that makes the S15 magazines viable. Mandatory, not optional.

$20 of grip tape that improves your shooting more than most $200 parts.

The part that determines whether you actually carry this gun every day. Cut for the optic, light, and comp.