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Diamondback Firearms OEM Replacement Grendel AR-15 Mid-Length Medium Profile Barrel 65M18M50B8R Color: Black Nitride, Finish: Nitride, 11% Off w/ Free Shipping

Diamondback Firearms OEM Replacement Barrel, Grendel, AR-15, 6.5mm Grendel, 18in, Medium Profile, Mid-Length, 1-8 Twist, 5/8 x 24 Thread, 4150 CrMov, Black Nitride, 65M18M50B8R
Diamondback Firearms OEM Replacement Barrel, Grendel, AR-15, 6.5mm Grendel, 18in, Medium Profile, Mid-Length, 1-8 Twist, 5/8 x 24 Thread, 4150 CrMov, Black Nitride, 65M18M50B8R
1 of 1 images
Diamondback Firearms OEM Replacement Barrel, Grendel, AR-15, 6.5mm Grendel, 18in, Medium Profile, Mid-Length, 1-8 Twist, 5/8 x 24 Thread, 4150 CrMov, Black Nitride, 65M18M50B8R

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Questions & Answers
Is this a type 1 or type 2?

Type 1 according to their website.

by Edward, Verified Owner, July 28, 2025
View All Q&A You Have a Question? Ask!
Color:
Black Nitride
Finish:
Nitride
Caliber:
6.5mm Grendel
Barrel Length:
18 in
Barrel Profile:
Medium
Gas System Length:
Mid Length
Firearms Threads Per Inch:
5/8x24
Barrel Twist Rate:
1-8
Barrel Material:
4150 CMV Steel
Gun Make:
Diamondback
Gun Model:
AR-15

Code: 1TH-RTB-65M18M50B8R-65M18M50B8R

MPN: 65M18M50B8R

UPC: 815875019084

List: $162.00Save 11%
$143.49

Product Info for Diamondback Firearms OEM Replacement Grendel AR-15 Mid-Length Medium Profile Barrel

Replace your barrel, or finish your build with this 18in black nitride barrel from Diamondback! Made of 4150 CMV with a mid-length gas system.image

Specifications for Diamondback Firearms OEM Replacement Grendel AR-15 Mid-Length Medium Profile Barrel:

Manufacturer: Diamondback Firearms
Color: Black Nitride
Finish: Nitride
Caliber: 6.5mm Grendel
Barrel Length: 18 in
Barrel Profile: Medium
Gas System Length: Mid Length
Firearms Threads Per Inch: 5/8x24
Barrel Twist Rate: 1-8
Barrel Material: 4150 CMV Steel
Gun Make: Diamondback
Gun Model: AR-15
Length: 18 in

Package Contents:

  • Diamondback Firearms OEM Replacement Grendel AR-15 Mid-Length Medium Profile Barrel

What firearm models does the manufacturer say Diamondback Firearms OEM Replacement Grendel AR-15 Mid-Length Medium Profile Barrel is compatible with?

The manufacturer says that Diamondback Firearms OEM Replacement Grendel AR-15 Mid-Length Medium Profile Barrel is compatible with AR-15

Diamondback Firearms OEM Replacement Grendel AR-15 Mid-Length Medium Profile Barrel Orderable Models

List of Orderable Models

  • Diamondback Firearms OEM Replacement Barrel, Grendel, AR-15, 6.5mm Grendel, 18in, Medium Profile, Mid-Length, 1-8 Twist, 5/8 x 24 Thread, 4150 CrMov, Black Nitride, 65M18M50B8R , MPN: 65M18M50B8R , UPC: 815875019084 , Code: 1TH-RTB-65M18M50B8R-65M18M50B8R
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Last updated 2026-09-28 UTC.