It’s all in the name… Sentinel. A Sentinel is a guard whose job it is to stand and keep watch. The Faxon Firearms Sentinel will do just that… keep watch… overwatch, that is. The AR-15, no doubt, is America’s favorite rifle. But even America’s rifle has its limitations. The primary limitation is that it cannot handle long-action cartridges such as the 8.6 Blackout.
The standard 5.56 NATO cartridge loses a lot of velocity and power at a distance. So to get over that hurdle but still have the same feel of an AR-15, you’re looking at an AR10.
The AR10 has the same look and feel as the AR-15. But you can now shoot longer action cartridges such as the 8.6 Blackout, .308 WIN, and 6.5 Creedmoor.
The Sentinel 8.6 BLK, part of Faxon’s Summit Line of firearms, boasts a billet aluminum receiver set, G3 Aluminum Streamline M-LOK Handguard, new 8.6 Blackout MuzzLok Muzzle Device, and the impressive 1:3 twist Big Gunner Profile Barrel. Faxon’s Lifetime Guarantee also backs the Faxon Sentinel.
Faxon Sentinel 8″ 8.6 Blackout AR10 Pistol

Specs
- 7075 Billet Aluminum Receiver Set
- Faxon 8″ 1:3 Twist Big Gunner Profile 8.6 BLK Barrel, 4150 CMV, Nitrided
- Faxon MuzzLok 8.6 Blackout 3-Port Muzzle Brake
- Faxon G3 Aluminum Streamline M-LOK Handguard
- Faxon G2 Superfinished AR10 BCG
- Faxon AR-10 Height Gas Block
- SBA3 Pistol Brace
- Faxon Trigger by Rise Armament
- B5 Pistol Grip
- Ambi Charging Handle
- Ambi Safety Selector
- Pistol-Length Gas System
Weight and Dimensions
- Weight: 6.59 lbs
- Length: 24.5″
- Depth: 7.5″
- Width: 2″
Faxon Sentinel 12″ 8.6 Blackout AR10 Pistol
Specs
- 7075 Billet Aluminum Receiver Set
- Faxon 12″ 1:3 Twist Big Gunner Profile 8.6 BLK Barrel, 4150 CMV, Nitrided
- Faxon MuzzLok 8.6 BLK 3-Port Muzzle Brake
- Faxon G3 Aluminum Streamline M-LOK Handguard
- Faxon G2 Superfinished AR10 BCG
- Faxon AR-10 Height Gas Block
- SBA3 Pistol Brace
- Faxon Trigger by Rise Armament
- B5 Pistol Grip
- Ambi Charging Handle
- Ambi Safety Selector
- Pistol-Length Gas System
Weight and Dimensions
- Weight: 7.87 lbs
- Length: 29.25″
- Depth: 7.5″
- Width: 2
Faxon Sentinel 16″ 8.6 Blackout AR10 Rifle

Specs
- 7075 Billet Aluminum Receiver Set
- Faxon 16″ 1:3 Twist Big Gunner Profile 8.6 BLK Barrel, 4150 CMV, Nitrided
- Faxon MuzzLok 8.6 Blackout 3-Port Muzzle Brake
- Faxon G3 Aluminum Streamline M-LOK Handguard
- Faxon G2 Superfinished AR10 BCG
- Faxon AR-10 Height Gas Block
- B5 Precision Collapsible Stock
- Faxon Trigger by Rise Armament
- B5 Pistol Grip
- Ambi Charging Handle
- Ambi Safety Selector
- Carbine-Length Gas System
Weight and Dimensions
- Weight: 9.33 lbs
- Length: 36″
- Depth: 7.5″
- Width: 2″