[18″] 6mm ARC Upper with Stainless Barrel
From: $539.00
Your Upper. Your Way.
Grendel Hunter uppers are highly customizable. You aren’t stuck buying components that you’re just going to change out once you receive it. Get it built how you want it from the beginning. Here’s how it works:
Using the options below, select the components you’d like used in your upper. The base price includes components for a base model. For example, the base price includes our shortest handguard option that still covers the gas block. But if you prefer a longer handguard, you can upgrade it for a little bit more. The grand total at the bottom of the builder will update with each selection. Get started on your upper build below!
- 18″ Stainless Liberty Barrel® made by Satern®
- 1-7.5 Twist 5R
- 416R Stainless Steel
- Medium Contour
- Mid Length Gas
- 6mm ARC chamber
- Grendel Hunter AR-15 Upper Receiver
- Billet 7075 T6 Aluminum
- Threaded Forward Assist Roll Pin
- Milled Logo
- Grendel Hunter AR-15 Handguard
- 6061 T6 Aluminum
- 1.3″ Inside Diameter
- Anti Rotation Tabs
- Steel Barrel Nut
- Steel Retention System
- Grendel Hunter Adjustable Gas Block
- CNC machined billet steel
- Magnesium Phosphate finish
- 18″ Stainless Liberty Barrel® made by Satern®
Options with ** after the title require a selection to add the upper to your cart.
The base price does not include a bolt carrier group or charging handle. If you already have a BCG in this caliber or have a charging handle that you like, we aren’t going to make you buy another one. You can just select “None” for those components.
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- 18″ Stainless Liberty Barrel® made by Satern®
- 1-7.5 Twist 5R
- 416R Stainless Steel
- Medium Contour
- Mid Length Gas
- Grendel Hunter AR-15 Upper Receiver
- Billet 7075 T6 Aluminum
- Threaded Forward Assist Roll Pin
- Milled Logo
- Grendel Hunter AR-15 Handguard
- 6061 T6 Aluminum
- 1.3″ Inside Diameter
- Anti Rotation Tabs
- Steel Barrel Nut
- Steel Retention System
- Grendel Hunter Adjustable Gas Block
- CNC machined billet steel
- Magnesium Phosphate finish
* Barrels are bedded to the receiver * Each bolt is headspaced to the barrel * All uppers are test fired
Click here to browse our other Uppers.
- 18″ Stainless Liberty Barrel® made by Satern®
Clay (verified owner) –
Bought this upper because I was interested in the 6 arc. Had to buy factory ammo as brass was not available. This upper shoots factory ammo in 3/4 moa groups. Hand loaded some of that brass and tightened up considerably even shot a few 3 shot one hole groups. Fair price, friendly staff, shipped fast, sharp looking rig, and it’s accurate. Very happy already recommended to a few people.