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Glock 21 OEM & Aftermarket Barrels from Lone Wolf, TRYBE Defense, Wilson Combat & Other Top Brands — 30 products / 109 models

Upgrade to a new Glock 21 barrel today for enhanced accuracy, increased durability, and smooth performance. Our selection includes OEM Glock barrels and aftermarket Glock 21 barrels from best-rated gun part brands. Swap in a match grade Glock barrel for tighter tolerances and higher quality materials to instantly improve your shot groupings. We also sell Glock 21 threaded barrels that provide seamless compatibility with suppressors, compensators, and other muzzle devices. Most of these G21 barrels offer drop-in installation to upgrade your pistol right out of the box. image

Looking for more ways to improve your handgun? Then check out our complete selection of Glock 21 parts and accessories for amazing deals on Glock 21 magazines, holsters, pistol red dots, and other premium upgrades. Check out our Pistol Barrel Guides for tips on the best ways to customize your Glock and how to convert calibers. Shop online with us today to get Free Shipping on most orders over $49.

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Image of SilencerCo Glock Threaded Barrel 8 models SilencerCo Glock Threaded Barrel (88) As Low As (Save Up to 20%) $135.49 Best Rated
Image of Lone Wolf Arms Glock 21 .45 ACP Threaded Barrel, .578x28 Lone Wolf Arms Glock 21 .45 ACP Threaded Barrel, .578x28 (33) List: $124.95 (Save $10.00) $114.95 Best Rated
Image of TRYBE Defense Glock 21 Match Grade Non-Threaded Pistol Barrel made-in-usa-flag 3 models TRYBE Defense Glock 21 Match Grade Non-Threaded Pistol Barrel (17) As Low As (Save Up to 71%) $54.36 Blazin' Deal
Image of TRYBE Defense Glock 21 Match Grade Threaded Pistol Barrel made-in-usa-flag 3 models TRYBE Defense Glock 21 Match Grade Threaded Pistol Barrel (17) As Low As (Save Up to 33%) $119.99
Image of Wilson Combat Match Grade Barrel 5 models Wilson Combat Match Grade Barrel (22) As Low As (Save Up to 26%) $165.99 Best Rated
Image of Alpha Shooting Sports Match Grade Crowned Barrels for Glock 2 models Alpha Shooting Sports Match Grade Crowned Barrels for Glock (2) As Low As (Save Up to 39%) $159.49
Image of Lone Wolf Arms AlphaWolf Glock 21 .45 ACP Threaded Barrel, .578x28 3 models Lone Wolf Arms AlphaWolf Glock 21 .45 ACP Threaded Barrel, .578x28 (14) As Low As (Save Up to 11%) $111.99 10% Coupon
Image of Glock OEM Glock 21 Threaded Barrel, 45 ACP, M16X1LH Thread Pitch Glock OEM Glock 21 Threaded Barrel, 45 ACP, M16X1LH Thread Pitch List: $372.00 (Save 35%) $239.99
Image of Glock 47740 45 ACP Fits Glock 21 Gen4 Black Steel Glock 47740 45 ACP Fits Glock 21 Gen4 Black Steel List: $315.99 (Save 24%) $239.99
Image of Agency Arms Mid Line Match Grade Drop-In Barrel, Fluted, Glock 34 3 models Agency Arms Mid Line Match Grade Drop-In Barrel, Fluted, Glock 34 List: $257.15 (Save Up to 11%) $229.99
Image of Meta Tactical Gen 3-4/ SF Glock 21 Barrel made-in-usa-flag Meta Tactical Gen 3-4/ SF Glock 21 Barrel $289.99
Image of Glock G21 45 ACP 4.6 Inch Barrel Glock G21 45 ACP 4.6 Inch Barrel Currently Unavailable
Image of Stormlake Pistol Barrel for 34022 GL-21-45ACP-530-05T-T-BK For Glock 21/21F 45ACP 5.3" TB Blk Stormlake Pistol Barrel for 34022 GL-21-45ACP-530-05T-T-BK For Glock 21/21F 45ACP 5.3" TB Blk Currently Unavailable
Image of Stormlake Pistol Barrel for 34017 Glock 21/21SF 10mm Conversion For 45ACP 4.6" SS Stormlake Pistol Barrel for 34017 Glock 21/21SF 10mm Conversion For 45ACP 4.6" SS (5) Currently Unavailable
Image of Gemtech Barrel Gemtech Barrel Currently Unavailable
Image of Stormlake Pistol Barrel for Glock 21/21SF 45ACP 5.30 in. Extended Length M16x1 LH Thread With Thread Protector Stormlake Pistol Barrel for Glock 21/21SF 45ACP 5.30 in. Extended Length M16x1 LH Thread With Thread Protector Currently Unavailable
Image of Advanced Armament Corporation Threaded Barrel For Glock 21 .45ACP 5.12 Inch M16x1 Left Hand TPI 103552 Advanced Armament Corporation Threaded Barrel For Glock 21 .45ACP 5.12 Inch M16x1 Left Hand TPI 103552 (2) Currently Unavailable
Image of VooDoo Innovations Glock 34 9mm Non-Threaded Barrel VooDoo Innovations Glock 34 9mm Non-Threaded Barrel Currently Unavailable
Image of Advanced Armament Corporation Threaded Barrel For Glock 21 .45ACP 5.12 Inch .578-28 TPI 103574 Advanced Armament Corporation Threaded Barrel For Glock 21 .45ACP 5.12 Inch .578-28 TPI 103574 (1) Currently Unavailable
Image of Tactical Superiority 45CM21520T Threaded Barrel For Glock 21 45 Automatic Colt P Tactical Superiority 45CM21520T Threaded Barrel For Glock 21 45 Automatic Colt P Currently Unavailable
Image of Stormlake Pistol Barrel for Glock 21/21SF 45ACP 6.02 in. Extended Length Stormlake Pistol Barrel for Glock 21/21SF 45ACP 6.02 in. Extended Length (2) Currently Unavailable
Image of Advantage Arms Glock 20/21 .22 LR Threaded Conversion Barrel w/ Adapter Advantage Arms Glock 20/21 .22 LR Threaded Conversion Barrel w/ Adapter Currently Unavailable
Image of Stormlake Pistol Barrel for Glock 21/21SF 45ACP-To-10mm Conversion 6.02 in. Extended Length Stormlake Pistol Barrel for Glock 21/21SF 45ACP-To-10mm Conversion 6.02 in. Extended Length Currently Unavailable
Image of S3F Solutions Glock 21 Drop In Match Grade Barrel, Fluted S3F Solutions Glock 21 Drop In Match Grade Barrel, Fluted (2) Currently Unavailable
Image of Stormlake Pistol Barrel for Glock 21/21SF 45ACP 4.60 in. Standard Length Isonite QPQ Black Stormlake Pistol Barrel for Glock 21/21SF 45ACP 4.60 in. Standard Length Isonite QPQ Black Currently Unavailable
Image of Stormlake Pistol Barrel for 34021 GL-21-45ACP-530-05T-T For Glock 21/21SF 45ACP 5.30" SS Stormlake Pistol Barrel for 34021 GL-21-45ACP-530-05T-T For Glock 21/21SF 45ACP 5.30" SS (1) Currently Unavailable
Image of S3F Solutions Glock 21 Drop In Match Grade Barrel, Threaded/Fluted S3F Solutions Glock 21 Drop In Match Grade Barrel, Threaded/Fluted Currently Unavailable
Image of Stormlake Pistol Barrel for Glock 21/21SF 45ACP 5.30 in. Extended Length 2 Ports Stormlake Pistol Barrel for Glock 21/21SF 45ACP 5.30 in. Extended Length 2 Ports Currently Unavailable
Image of Stormlake Pistol Barrel for 34019 GL-21-45ACP-460 For Glock 21/21SF 45ACP 4.6" Stainless Steel Stormlake Pistol Barrel for 34019 GL-21-45ACP-460 For Glock 21/21SF 45ACP 4.6" Stainless Steel (1) Currently Unavailable
Image of Voodoo Innovations VDI Ported Barrel - Glock 21 Voodoo Innovations VDI Ported Barrel - Glock 21 Currently Unavailable
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