
Availability: In Stock
Current Stock: Out of stock
The H&K 51000983 is an OEM replacement barrel for the H&K 45 pistol, chambered in 45 ACP with a 5.20-inch length. If you run an H&K 45 and want a factory barrel as a spare, backup, or upgrade option, this is the genuine H&K part engineered to your exact specs. Whether you're building a second upper, need a replacement after hard use, or just want to keep a spare on hand, an OEM barrel gives you the confidence that it'll drop right in and function as H&K intended.
Factory barrels like this one are precision-manufactured to tight tolerances and proofed to H&K's standards. You're getting the same part that ships on new H&K 45 pistols—no guessing about fit or chamber dimensions, no worrying about compatibility. For serious shooters and tactical users who depend on their gear, OEM spares eliminate variables.
Installation is straightforward for anyone comfortable field-stripping their H&K 45. Keep one in your range bag, your truck, or your duty locker. If your current barrel ever needs retirement, you'll be back in the fight without downtime or delays waiting for shipping.
| Caliber | 45 ACP |
| Barrel Length | 5.20 inches |
| Finish | Black |
| Manufacturer Part Number | 51000983 |
| Firearm Compatibility | H&K 45 |
Yes. This is the OEM barrel for the H&K 45 pistol and is engineered to fit and function in H&K 45 frames.
You receive the barrel only. No other components, springs, or installation hardware are included.
Yes. This is a factory H&K part suitable for replacement or as a spare barrel for your H&K 45.

SKU: 167513030 • Width: 6.5in • Height: 1.3in • Depth: 10.2in • Weight: 0.285oz





Availability: In Stock
Current Stock: Out of stock
The H&K 51000983 is an OEM replacement barrel for the H&K 45 pistol, chambered in 45 ACP with a 5.20-inch length. If you run an H&K 45 and want a factory barrel as a spare, backup, or upgrade option, this is the genuine H&K part engineered to your exact specs. Whether you're building a second upper, need a replacement after hard use, or just want to keep a spare on hand, an OEM barrel gives you the confidence that it'll drop right in and function as H&K intended.
Factory barrels like this one are precision-manufactured to tight tolerances and proofed to H&K's standards. You're getting the same part that ships on new H&K 45 pistols—no guessing about fit or chamber dimensions, no worrying about compatibility. For serious shooters and tactical users who depend on their gear, OEM spares eliminate variables.
Installation is straightforward for anyone comfortable field-stripping their H&K 45. Keep one in your range bag, your truck, or your duty locker. If your current barrel ever needs retirement, you'll be back in the fight without downtime or delays waiting for shipping.
| Caliber | 45 ACP |
| Barrel Length | 5.20 inches |
| Finish | Black |
| Manufacturer Part Number | 51000983 |
| Firearm Compatibility | H&K 45 |
Yes. This is the OEM barrel for the H&K 45 pistol and is engineered to fit and function in H&K 45 frames.
You receive the barrel only. No other components, springs, or installation hardware are included.
Yes. This is a factory H&K part suitable for replacement or as a spare barrel for your H&K 45.
SKU: 167513030 • Width: 6.5in • Height: 1.3in • Depth: 10.2in • Weight: 0.285oz
