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 G43 (6+1) and G43X (10+1 / 13+1 aftermarket) frames. Specs & features: Drop-in fit: Glock 43 and Glock 43X (subcompact 9mm) 416R stainless steel, heat-treated for durability Black nitride (QPQ salt-bath) finish - corrosion-resistant, low-glare 1/2x28 TPI muzzle thread - standard 9mm suppressor / comp pitch Recessed target crown for consistent gas release Aluminum thread protector included Chamber and locking-lug geometry cut to OEM spec - no feed-ramp fitting Compatibility notes: G43 and G43X 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 G17 / G19 / G26 compensators are wider than the G43 slide and will not sit flush. The Faxon EXOS-533 is the correct dedicated G43 / G43X / G48 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 G43X (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. DISCLAIMER: GLOCK is a federally registered trademark of GLOCK, Inc. and is one of many trademarks owned by GLOCK, Inc. or GLOCK Ges.m.b.H. Neither 3CR Tactical nor this site are affiliated with, or endorsed by, GLOCK, Inc. or GLOCK Ges.m.b.H. The use of "GLOCK" on this page is merely to advertise the sale of aftermarket GLOCK pistol components. For genuine GLOCK, Inc. products, visit www.glock.com.