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You are here:Home > BARRELS > .300BLK Barrels
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8" to 12.5" Barrels 14.5" to 16" Barrels
Barrels up to 16" chambered in .300BLK!
All NFA rules apply for barrels under 16", it is the buyer's responsibility to make sure they comply with all NFA rules and applicable laws.
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High Standard 16" 300 AAC 1:8 Twist 4150V Barrel CMMG 16" 416 Stainless Steel Barrel - .300BLK - M300 Profile Yankee Hill 16" .300 Blackout Barrel - Threaded

Our Price:
$134.99
In Stock

Our Price:
$199.99
In Stock
(1)

Our Price:
$194.99
In Stock
(10)
High Standard 16" 300 AAC 1:8 Twist 4150V Barrel - HSAR-B300-1 CMMG 16" 416 Stainless Steel Barrel - .300BLK - M300 Profile - 30D770A Yankee Hill 16" .300 Blackout Barrel - Threaded - YHM-70-T
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: 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: 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
Odin Works 300 Blackout Barrel 16.1" Carbine Length Yankee Hill 16" .300 Blackout Barrel - Threaded Fluted CMMG Barrel Sub-Assm, 8.0" MC 4140CM SBN, 300 BLK

Our Price:
$250.00
In Stock
(1)

Our Price:
$194.99
In Stock
(4)

Our Price:
$169.95
In Stock
(5)
Odin Works 300 Blackout Barrel 16.1" Carbine Leghth- B-300-16 Yankee Hill 16" .300 Blackout Barrel - Threaded Fluted - YHM-70-TF CMMG Barrel Sub-Assm, 8.0" MC 4140CM SBN, 300 BLK- 30D810A
  • 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
  • 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: 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
CMMG 16.1" .300BLK Barrel Multi-Role Profile - 4140CM - Salt Bath Nitride Radical Firearms 16" 300 AAC Pistol Gas 1-8 Twist 4150V Daniel Defense 10.3" .300BLK CHF Barrel - S2W - Pistol

Our Price:
$189.95
In Stock
(1)

Our Price:
$129.95
(Out of Stock)
(9)

Our Price:
$274.99
(Out of Stock)
CMMG 16.1" .300BLK Barrel Multi-Role Profile - 4140CM - Salt Bath Nitride - 30DF80A Radical Firearms 16" 300 AAC Pistol Gas 1-8 Twist 4150V - 16300P1-8 Daniel Defense 10.3" .300BLK CHF Barrel - S2W - Pistol - 07-077-16176-018
  • 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
  • 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
  • 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
Daniel Defense 16" .300BLK CHF Barrel - S2W - Carbine

Our Price:
$274.99
(Out of Stock)
Daniel Defense 16" .300BLK CHF Barrel - S2W - Carbine - 36-116-22022-107
  • 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