Odin Works 6.5 Grendel Type II AR-15 Barrel 1:8 Rifle Length DMR 20" w/BCG/Gas Block

Manufactured by Odin Works
SKU: B-6.5-20-R-TG-BCG
MPN: B-6.5-20-R
Manufactured by Odin Works
2 Reviews

In Stock

Orders of non-FFL items will ship same-day if placed before 3:30pm CST. FFL orders will ship within 7 business days if transfer details are provided

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The Odin Works 20" 6.5 Grendel Barrel is a button rifled 416R stainless steel barrel for the AR-15. This barrel includes a bolt carrier group with a 6.5 Grendel type 2 bolt face, stainless steel .750” tunable gas block.

NOTE: Rifle length gas tube sold separately.

Safety Note: Choosing 6.5 Grendel comes with an added complication. There are “Type I” and “Type II” bolt/barrel specifications out there, and you CAN NOT mix and match parts for each of them without risk of damage and/or injury. Type II is by far the most popular configuration, but pay attention to what you are buying! A Type I bolt won’t chamber rounds in a Type II barrel at all. Even worse, a Type II bolt mated to a Type I barrel will create excessive headspace and result in a rifle that is dangerous to fire.

  • 20" 416R stainless steel
  • DMR Heavy contour
  • Chambered in 6.5 Grendel with a 1:8 twist rate
  • Rifle length gas system
  • Includes tunable gas block
  • 6.5 Grendel Type II bolt carrier group included
  • 5/8x24 thread pitch
  • SAAMI spec chamber
  • Button rifled
  • Hand lapped
  • M4 feed ramps
  • 1 MOA guaranteed
  • Weight: 2.66 lbs

Odin Works is an innovative group creating and manufacturing high quality AR-15 products and accessories. They bring their experience and knowledge to the consumer through progressive design and technology.
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Barrel CoatingStainless Steel
Barrel ContourDMR
Barrel Length20
Barrel LiningStainless Steel
Barrel Material416R Stainless Steel
BrandOdin Works
Caliber Gauge6.5 Grendel Type 2
Feed RampsM4
Gas Seat Diameter.750
Gas System LengthRifle
Thread Pattern5/8 X 24
Twist Rate1:8
Weight2.66 lbs
California Prop 65 warning

 WARNING: This product can expose you to chemicals, which are known to the State of California to cause Cancer and Reproductive Harm. For more information go to www.P65Warnings.ca.gov.

Ratings & Reviews

2 reviews

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Best upgrade for the AR-15 Platform I have made.

by -

Upgraded the Odin Works 223 Wylde 18" upper after not being excited to take it out to the range anymore. After the great shortage I was able to finally find 7 boxes of 6.5 Grendel 123 gn. Hornady match ammo on the shelf at Academy. Came straight home and ordered this replacement barrel and really enjoy taking the rifle back out to the range.
With old eyes I still can shoot MOA or better when I do my part, wish I could have done it sooner.

Excellent barrel


I have this ODIN Works barrel, gas block, bcg & gas tube set up as a semi-auto companion to my .308 Win bolt gun, which also is a 20" heavy profile barreled rifle. I've shot numerous 5-shot groups under 1 MOA, the best & most recent of which was 0.62" with Hornady Black. The good folks at ODIN Works will give you handloading recommendations if you ask them. Great company, great barrel.