Glock Barrels
OEM Factory • Threaded • Aftermarket • .22 LR Conversion
The complete Glock barrel catalog at Keep Shooting — OEM factory replacement barrels for the full Gen-pattern lineup (G17, G19, G20, G21, G22, G23, G26, G27, G34, G42, G43), OEM threaded barrels for suppressor and compensator mounting (G17, G21, G23, plus the G44 .22 LR with adapter), aftermarket performance barrels from Grey Ghost Precision and Chaos Gear Supply, and the Advantage Arms .22 LR conversion for shooters who want to practice trigger and sight discipline on a G17 frame at rimfire ammo cost. Direct factory-fit drop-ins, no gunsmithing required for OEM SKUs.
Glock Barrels
Glock Barrels at Keep Shooting
The Glock barrel is the most-commonly-swapped internal component on the platform — Glock pistols are designed around a takedown geometry that lets a shooter pull the slide, drop the recoil spring assembly, lift the barrel out, and drop a replacement in under a minute. That makes the barrel the natural upgrade path for shooters who want a threaded muzzle for suppressor work, a match-grade replacement for competition, or a caliber conversion for cheap-practice rimfire shooting on a centerfire frame. Keep Shooting's Glock barrel catalog covers roughly two dozen SKUs across four use cases: OEM factory-replacement barrels for stock-length restoration, OEM threaded barrels for suppressor and compensator mounting, aftermarket performance barrels from third-party manufacturers, and the Advantage Arms .22 LR conversion for shooters who want to practice on a G17 frame at rimfire cost-per-round.
OEM Factory-Replacement Barrels — The Stock-Length Drop-Ins
OEM Glock barrels are the manufacturer’s own factory-spec replacement barrels — same steel, same rifling profile, same dimensions as the barrel that originally shipped in the pistol. For shooters whose factory barrel has worn beyond service life, suffered a setback from a squib load, or accumulated lead fouling from heavy lead-bullet handloading, the OEM replacement restores the pistol to original-spec condition with no fitting, no gunsmithing, no slide work. Keep Shooting stocks OEM barrels for the full common-frame lineup: the G17 (9mm full-size), G19 (9mm compact), G20 (10mm full-size), G21 (.45 ACP full-size), G22 (.40 S&W full-size), G23 (.40 S&W compact), G26 (9mm subcompact), G27 (.40 S&W subcompact), G34 (9mm competition long-slide), G42 (.380 ACP slimline), and G43 (9mm single-stack carry). All ship as direct drop-ins matched to the OEM slide and recoil-spring-assembly dimensions for the specific Glock model number.
OEM Threaded Barrels — Suppressor and Compensator Mounting
Threaded barrels are factory-spec barrels with the muzzle machined for threaded muzzle-device attachment — the engineering prerequisite for mounting a sound suppressor or a muzzle compensator on a Glock pistol. Thread pitch is caliber-specific by US convention: 1/2x28 for 9mm (the G17 threaded barrel runs this thread), 9/16x24 for .40 S&W (the G23 threaded barrel), and .578x28 for .45 ACP (the G21 threaded barrel). For the G44 rimfire pistol, the G44 threaded barrel ships with the adapter included — .22 LR rimfire muzzle threading uses a different standard (typically 1/2x28 with adapter) than centerfire threads, so the adapter is the way the platform bridges to the common 9mm-thread suppressor inventory most shooters already own. NFA reminder: attaching a suppressor to any of these threaded barrels requires a registered suppressor on a Form 4 or Form 1 ATF approval; the threaded barrel itself is not restricted, but the can that mounts to it is. Per Keep Shooting’s shipping restrictions, barrel parts may be subject to state-level restrictions — the threaded barrel is a normal barrel SKU, but check the restriction list before ordering to a restricted-state address.
Aftermarket Performance Barrels — Grey Ghost & Chaos Gear
Aftermarket Glock barrels make accuracy, appearance, or material claims the OEM spec doesn’t address. The Grey Ghost Precision G17 Threaded Barrel is the upgraded threaded option in the catalog — 1/2x28 threaded for 9mm suppressor mounting, with the match-grade fit and finish Grey Ghost Precision is known for in the broader precision Glock-component market. Grey Ghost Precision is a US-based precision-component manufacturer whose catalog covers AR-pattern rifles in calibers from 5.56 NATO through the precision tier (.308, 6.5 Creedmoor), MKII billet receiver sets for the AR-15 and AR-10, GGP performance handguards, complete uppers, and slides for the Glock G17 / G19 / G43 and Sig P320; the threaded barrel SKU we stock is the platform-bridge from their precision-rifle engineering tolerances into the pistol-component aftermarket. The Chaos Gear Supply Glock 17 Barrel is the budget aftermarket option — Chaos Gear Supply is the consumer-facing brand of CGS Group (primarily a suppressor manufacturer) and ships the Gen-5-compatible non-threaded G17 replacement at a price point below the Grey Ghost threaded and below most match-grade aftermarket alternatives. For shooters upgrading from OEM without the suppressor-mounting requirement, the Chaos Gear is the entry point.
.22 LR Conversion — Advantage Arms for Cheap Practice
The Advantage Arms Glock 17 .22 LR Conversion Threaded Barrel sits in a different category from the rest of the Glock barrel catalog — it is not a 9mm replacement barrel, but a complete caliber-conversion assembly that lets a G17 owner shoot .22 LR rimfire ammunition through the same frame, grip, sight picture, and trigger they shoot 9mm through. Advantage Arms is the Coeur d'Alene, Idaho specialist in .22 LR conversions for the Glock, 1911, 2011, and XD platforms; the conversion package includes the dedicated .22 LR barrel, a rimfire-spec slide assembly engineered for blowback operation (rimfire pressure is too low to cycle the 9mm Glock’s standard locked-breech action), and a .22 LR magazine that drops into the standard G17 magazine well. The economic case is direct: 9mm range ammo runs roughly $0.30 per round in 2026 market conditions, while .22 LR runs roughly $0.05 per round — a 6:1 cost ratio. For trigger-discipline drills, sight-picture work, and high-volume range practice where the shooter wants to fire 500 to 1,000 rounds per session, the Advantage Arms conversion turns a 9mm Glock into the rimfire trainer it would otherwise cost $400+ to add to the safe. (Note: this SKU is occasionally out of stock; the Glock 44 rimfire pistol with the G44 threaded barrel is the alternative path for shooters who want a dedicated rimfire Glock rather than a 9mm-frame conversion.)
Pairing & Cross-References
For the full Glock parts catalog beyond barrels — recoil springs, trigger components, sights, slide parts — see the parent Glock parts category. For Glock magazines, the Glock magazines catalog covers the full mag inventory with dedicated sub-categories for the G17, G19, G22, G26, and G42 models. For the complete Glock brand catalog covering pistols, parts, mags, and Glock- branded apparel, see the brand landing. For the broader gun parts category covering other platforms (1911, AR-15, AK, military surplus), see the parent catalog.
Frequently Asked Questions — Glock Barrels
Keep Shooting carries a wide selection of Glock Barrels products from trusted brands. Browse our catalog to see the full range, and use the filters on the left to narrow by brand, price, or product type.
Yes! All orders over $49.95 qualify for free shipping, including Glock Barrels products. Orders typically ship within 1–2 business days.
Keep Shooting offers hassle-free returns on Glock Barrels products. If you're not completely satisfied, contact our customer service team for a return authorization. All products must be in original, unused condition.
If you need help choosing the right Glock Barrels product, our team is available to assist. Check individual product descriptions for detailed specifications, or contact us directly and we'll help you find the best fit for your needs.