AR 15 SBR HAR CQB 8″ – .300 Blackout


The best CQB SBR you can get! .300 Blackout and an 8″ barrel makes this rifle the ultimate blend of small size and big takedown power!

In Stock

SKU: HARC041 Category:
Effective Capacity
Effective Range
Effective Accuracy
Stopping Power

This weapon is designed to provide superior ballistics for CQB combat in a very small package. We’ve built a reliable, accurate, and lightweight AR-15 type pistol, chambered in the next generation .300 Blackout.  The .300 Blackout round is exceptional with a short barrel like this SBR.


Our weapons are designed to be 100% reliable, accurate, and effective in order to protect you and your family.  The small size and light weight of this AR 15 SBR combined with the stopping power of the .300 Blackout rifle round, and available high capacity magazines make it a fantastic choice for home defense, a truck or car gun, or for smaller people.

This amazing weapon is built on our precision forged Horizon Arms Research 7075-T6 aluminum receiver married to our truck-proof round M-Lok hand guard.  A top of the line Geissele trigger provides a light pull with quick accurate shots.   We’ve added a Phoenix Weaponry hand stop for safety.  A Trijicon RMR red dot optic provides durable, lightweight, quick target acquisition.  All in all, we have taken the best components from Horizon Arms Research and the firearms industry at large, and created the best tactical AR 15 pistol possible.

An optional Law Tactical adapter can add a folding stock to this weapon.  It adds a little weight, but allows this SBR to fit into a backpack or storage space in a car or truck.


This weapon is also available in 5.56 mm, and as an AR 15 Pistol.

As always, if you have any questions you can email us at: [email protected]

If you would like a variant of this weapon that complies with your local state’s requirements (such as CA, MA, MD, NJ, NY, etc…) please email us.  Read more about restrictive state laws and compliant weapons here.

You are responsible for knowing and obeying your local firearm laws.

The product photos may differ in small ways from the product you receive.  Read more about why there might be small differences here.

Rifle Type


Weapon Type

Next-Gen Ammo


.300 BLK

Effective Capacity


Effective Range




Effective Accuracy


Stopping Power


Weapon Weight

5 lbs 9 oz

Scroll to Top