Drop-in replacement barrel for the Glock 43 and Glock 43X — this threaded barrel replaces the OEM tube without any fitting, gunsmithing, or frame modification. The 1/2x28 TPI muzzle opens the subcompact up to a 9mm compensator, thread protector, or properly-rated suppressor while the included aluminum thread protector keeps the same holster line when nothing is mounted. Refreshed for 2026 with confirmed compatibility for both Glock 43 (6+1) and Glock 43X (10+1 / 13+1 aftermarket) frames.
Specs & features:
Compatibility notes: Glock 43 and Glock 43X share the same slide-and-barrel footprint, so a single threaded barrel covers both frames. Pair only with a subcompact-width 9mm comp — full-size Glock 17 / Glock 19 / Glock 26 compensators are wider than the Glock 43 slide and will not sit flush. The Faxon EXOS-533 is the correct dedicated Glock 43 / Glock 43X / Glock 48 compensator. Chambered for standard 9mm Luger (9x19); not rated for +P+ hot-loaded proof loads. A ~50-round break-in is recommended before mounting a suppressor so any surface flash from the nitride bath fully burnishes.
Suppressor and recoil-spring notes: The 1/2x28 pitch is compatible with common 9mm cans including SilencerCo Osprey 9, Rugged Obsidian 9, and AAC TiRant 9M when a booster / Nielsen device is fitted. If you run the Glock 43X (13+1 with an aftermarket mag) suppressed or with a heavy comp, watch for short-stroking on light 115gr practice ammo — a slightly heavier recoil spring (Wolff 15lb replacement) restores reliability without sharpening felt recoil.
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