Quantcast

Join Our Mailing List

Review Us!

Review Us

Follow Us!

facebook google plus twitter PrimaryArms LLC YouTube Channel flickr
 
You are here:Home > AR 15 STORE > AR-15 Barrels > .300BLK Barrels
8" to 12.5" Barrels 14.5" to 16" Barrels
Sort By:
Page of 1
High Standard 16" 300 AAC 1:8 Twist 4150V Barrel Radical Firearms 10.5" 300 AAC Pistol Gas 1-8 Twist 4150V Radical Firearms 16" 300 AAC Pistol Gas 1-8 Twist 4150V

Our Price:
$134.99
In Stock

Our Price:
$129.95
In Stock
(1)

Our Price:
$129.95
In Stock
(9)
High Standard 16" 300 AAC 1:8 Twist 4150V Barrel - HSAR-B300-1 Radical Firearms 10.5" 300 AAC Pistol Gas 1-8 Twist 4150V Radical Firearms 16" 300 AAC Pistol Gas 1-8 Twist 4150V - 16300P1-8
High Standard Manufacturing Medium Heavy Contour barrel in 300BLK. These barrels feature a 1:8 twist rate for use with a variety of ammunition, Mil-Spec phosphate finish and are threaded 5/8x24 for with all of the latest 30 Cal. muzzle devices.

  • Manufacturer: High Standard
  • Chamber: .300BLK
  • Fluted: No
  • Barrel Length: 16"
  • Twist Rate: 1:8
  • Gas System: Carbine
  • Diameter at Gas Port: 0.750"
  • Thread Pitch: 5/8x24
  • Material: 4150 Chrome Moly Vanadium Steel
  • Finish: Phosphate
  • Process: Button Rifled
  • Barrel Lining: NA
  • Barrel Extension: A4
  • Assembly: Stripped
  • Weight: 1lb 15.3oz
  • Manufacturer: Radical Firearms
  • Chamber: .300BLK
  • Fluted: No
  • Barrel Length: 10.5"
  • Twist Rate: 1:8
  • Gas System: Pistol
  • Diameter at Gas Port: 0.750"
  • Thread Pitch: 5/8x24
  • Material: 4150 Chrome Moly Vanadium Steel
  • Finish: Melonite
  • Process: Button Rifled
  • Barrel Lining: Melonite
  • Barrel Extension: A4
  • Assembly: Stripped
  • Weight: 1lb 6.2oz
  • Manufacturer: Radical Firearms
  • Chamber: .300BLK
  • Fluted: No
  • Barrel Length: 16"
  • Twist Rate: 1:8
  • Gas System: Pistol
  • Diameter at Gas Port: 0.750"
  • Thread Pitch: 5/8x24
  • Material: 4150 Chrome Moly Vanadium Steel
  • Finish: Melonite
  • Process: Button Rifled
  • Barrel Lining: Melonite
  • Barrel Extension: A4
  • Assembly: Stripped
  • Weight: 1lb 15.3oz
Radical Firearms 8.5" 300 AAC HBAR Profile Melonite 1-8 CMMG 16" 416 Stainless Steel Barrel - .300BLK - M300 Profile Daniel Defense 10.3" .300BLK CHF Barrel - S2W - Pistol

Our Price:
$129.95
In Stock
(2)

Our Price:
$199.99
In Stock
(1)

Our Price:
$274.99
In Stock
Radical Firearms 8.5" 300 AAC HBAR Profile Melonite 1-8 8.5-300AAC1-8BARREL CMMG 16" 416 Stainless Steel Barrel - .300BLK - M300 Profile - 30D770A Daniel Defense 10.3" .300BLK CHF Barrel - S2W - Pistol - 07-077-16176-018
  • Manufacturer: Radical Firearms
  • Chamber: .300BLK
  • Fluted: No
  • Barrel Length: 8.5"
  • Twist Rate: 1:8
  • Gas System: Pistol
  • Diameter at Gas Port: 0.750"
  • Thread Pitch: 5/8x24
  • Material: 4150 Chrome Moly Vanadium Steel
  • Finish: Melonite
  • Process: Button Rifled
  • Barrel Lining: Melonite
  • Barrel Extension: A4
  • Assembly: Stripped
  • Manufacturer: CMMG
  • Chamber: .300BLK
  • Contour: M300
  • Fluted: No
  • Barrel Length: 16"
  • Twist Rate: 1:7
  • Gas System: Carbine
  • Diameter at Gas Port: 0.750"
  • Thread Pitch: 5/8x24
  • Feed Ramps: M4
  • Material: 416 Stainless Steel
  • Finish: Stainless Steel
  • Process: Button Rifled
  • Barrel Lining: Stainless Steel
  • Barrel Extension: A4
  • Assembly: Stripped
  • Weight: N/A
  • Manufacturer: Daniel Defense
  • Chamber: .300BLK
  • Contour: S2W
  • Fluted: No
  • Barrel Length: 10.3"
  • Twist Rate: 1:8
  • Gas System: Pistol Length
  • Diameter at Gas Port: 0.750"
  • Thread Pitch: 5/8x24
  • Feed Ramps: M4
  • Material: Mil-Spec Chrome Moly Vanadium Steel
  • Finish: Salt Bath Nitride
  • Process: Cold Hammer Forged
  • Barrel Lining: Salt Bath Nitride
  • Barrel Extension: A4
  • Assembly: Stripped
  • Weight: 20.64oz
Yankee Hill 16" .300 Blackout Barrel - Threaded Yankee Hill 16" .300 Blackout Barrel - Threaded Fluted Odin Works 300 Blackout Barrel 16.1" Carbine Length

Our Price:
$194.99
In Stock
(10)

Our Price:
$194.99
In Stock
(4)

Our Price:
$250.00
In Stock
(1)
Yankee Hill 16" .300 Blackout Barrel - Threaded - YHM-70-T Yankee Hill 16" .300 Blackout Barrel - Threaded Fluted - YHM-70-TF Odin Works 300 Blackout Barrel 16.1" Carbine Leghth- B-300-16
  • Manufacturer: Yankee Hill Machine
  • Chamber: .300BLK
  • Contour: Medium
  • Fluted: No
  • Barrel Length: 16"
  • Twist Rate: 1:8
  • Gas System: Carbine Length
  • Diameter at Gas Port: 0.750"
  • Thread Pitch: 5/8x24
  • Feed Ramps: M4
  • Material: 4140 Chrome Moly Vanadium Steel
  • Finish: Melonite QPQ
  • Process: N/A
  • Barrel Lining: Melonite QPQ
  • Barrel Extension: M4
  • Assembly: Stripped
  • Weight: 26.2oz
  • Manufacturer: Yankee Hill Machine
  • Chamber: .300BLK
  • Contour: Medium
  • Fluted: Yes
  • Barrel Length: 16"
  • Twist Rate: 1:8
  • Gas System: Carbine Length
  • Diameter at Gas Port: .750"
  • Thread Pitch: 5/8x24
  • Feed Ramps: M4
  • Material: 4140 Chrome Moly Vanadium Steel
  • Finish: Melonite QPQ
  • Process: N/A
  • Barrel Lining: Melonite QPQ
  • Barrel Extension: M4
  • Assembly: Stripped
  • Weight: 26.2oz
  • Manufacturer: Odin Works
  • Chamber: .300BLK
  • Contour: Medium Profile
  • Fluted: No
  • Barrel Length: 16.1"
  • Twist Rate: 1:8
  • Gas System: Carbine
  • Diameter at Gas Port: 0.750"
  • Thread Pitch: 5/8x24
  • Feed Ramps: M4
  • Material: 416 Stainless Steel
  • Finish: Stainless
  • Process: Button Rifled
  • Barrel Lining: Stainless
  • Barrel Extension: A4
  • Assembly: Stripped
  • Weight: 28.6oz
Daniel Defense 16" .300BLK CHF Barrel - S2W - Carbine CMMG Barrel Sub-Assm, 8.0" MC 4140CM SBN, 300 BLK CMMG 16.1" .300BLK Barrel Multi-Role Profile - 4140CM - Salt Bath Nitride

Our Price:
$274.99
In Stock

Our Price:
$169.95
In Stock
(5)

Our Price:
$189.95
In Stock
(1)
Daniel Defense 16" .300BLK CHF Barrel - S2W - Carbine - 36-116-22022-107 CMMG Barrel Sub-Assm, 8.0" MC 4140CM SBN, 300 BLK- 30D810A CMMG 16.1" .300BLK Barrel Multi-Role Profile - 4140CM - Salt Bath Nitride - 30DF80A
  • Manufacturer: Daniel Defense
  • Chamber: .300BLK
  • Contour: S2W
  • Fluted: No
  • Barrel Length: 16"
  • Twist Rate: 1:8
  • Gas System: Carbine Length
  • Diameter at Gas Port: 0.750"
  • Thread Pitch: 5/8x24
  • Feed Ramps: M4
  • Material: Mil-Spec Chrome Moly Vanadium Steel
  • Finish: Salt Bath Nitride
  • Process: Cold Hammer Forged
  • Barrel Lining: Salt Bath Nitride
  • Barrel Extension: A4
  • Assembly: Stripped
  • Weight: 36.64oz
  • Manufacturer: CMMG
  • Chamber: .300BLK
  • Contour: Medium
  • Fluted: No
  • Barrel Length: 8.0"
  • Twist Rate: 1:7
  • Gas System: Pistol Length
  • Diameter at Gas Port: 0.750"
  • Thread Pitch: 5/8x24
  • Feed Ramps: M4
  • Material: 4140 CrMo
  • Finish: Salt Bath Nitride
  • Process: Button Rifled
  • Barrel Lining: Salt Bath Nitride
  • Barrel Extension: A4
  • Assembly: Stripped
  • Weight: 14.6oz
  • Manufacturer: CMMG
  • Chamber: .300BLK
  • Contour: Multi Role Profile
  • Fluted: No
  • Barrel Length: 16.1"
  • Twist Rate: 1:7
  • Gas System: Carbine
  • Diameter at Gas Port: 0.750"
  • Thread Pitch: 5/8x24
  • Feed Ramps: M4
  • Material: 4140 Chrome Moly
  • Finish: Salt Bath Nitride
  • Process: Button Rifled
  • Barrel Lining: Salt Bath Nitride
  • Barrel Extension: A4
  • Assembly: Stripped
  • Weight: 28.8oz
Seekins Precision 8" 300 Blackout SS barrel - Fluted (Stainless)

Our Price:
$336.30
(Out of Stock)
Seekins Precision 8" 300 Blackout SS barrel - Fluted (Stainless) 0010140003
Seekins Precision 8" 300 Blackout SS barrel - Fluted (Stainless)
  • Manufacturer: Seekins Precision
  • Chamber: .300BLK
  • Fluted: Yes - Radial Fluted
  • Barrel Length: 8.0"
  • Gas System: Pistol
  • Diameter at Gas Port: 0.750"
  • Thread Pitch: 5/8x24
  • Material: Non-glare bead blasted stainless steel
  • Finish: Stainless Steel
  • Process: 5R Button Rifled
  • Assembly: Stripped
  • Weight: 18.08 Ounces