▼ 16% below avg
Glock OEM Black .45acp 4.49-inch Threaded Barrel G21
Lowest Price
$163.99
MSRP
$372
Savings
56% off
Verified In Stock at
3 Stores
Updated
Aug 26, 2026
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Good 4 Guns Best
● In Stock
$163.99
OpticsPlanet Coupon
Code ARMSAGORA — 7% Off Most Items
● In Stock
$201.8
$216.99
Hinterland Outfitters
● In Stock
$220.4
Brownells
● Out of Stock
$169.99
Lanbos Armory
● Out of Stock
$193.22
E-Commerce Arms
● Out of Stock
$200.7
Red Team Armory
● Out of Stock
$208.32
GrabAGun
● Out of Stock
$209.99
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Fits Glock 21 Gen 4
M16X1 LH
Thread protector included
Description
These replacement barrels are the GLOCK factory originals. Consider stockpiling a few before they stop making them available to the general public. GLOCK factory replacement parts are manufactured to the exact same specifications tolerances and materials as the original parts. Specifications: M16x1LH Thread Pitch For GLOCK 21 Glock Original Equipment Manufacturer (OEM) part Manufacturer Part #39895 Barrel length - 4.49in (114mm)
