Jacob Grey Logo
  • Features: Lower receiver:
    • Billet 7075-T6 aerospace aluminum
    • Laser engraved logo
    • MIL-A-8625F Type III Class 2 hardcoat anodized finish
    • Compatible with MIL-SPEC lower receiver parts
    • Dimensional accuracy inspected
    • All sharp edges de-burred by hand.
    • Multi caliber marking for build versatility
    • Flared and beveled magwell
    • Set screw installation for bolt catch
    • Integrated winter trigger guard
    • Weight: 7.9oz
    Upper receiver:
    • Compatible with most standard mil-spec handrails with indexing tabs also.
    • Billet 7075-T6 aerospace aluminum
    • Jacob Grey lightweight design
    • M4 feed ramps
    • Machined T-marks
    • Laser engraved logo
    • MIL-A-8625F Type III Class 2 hardcoat anodized flat black finish
    • Compatible with Jacob Grey Billet dust covers and MIL-SPEC AR upper receiver parts
    • Weight: 7.7oz
  • More Exciting Features and Specs to come!!
  • Features: Lower receiver:
    • Billet 7075-T6 aerospace aluminum
    • Laser engraved logo
    • MIL-A-8625F Type III Class 2 hardcoat anodized finish
    • Compatible with MIL-SPEC lower receiver parts
    • Dimensional accuracy inspected
    • All sharp edges de-burred by hand.
    • Multi caliber marking for build versatility
    • Flared and beveled magwell
    • Set screw installation for bolt catch
    • Integrated winter trigger guard
    • Weight: 7.9oz
    Upper receiver:
    • Compatible with most standard mil-spec handrails with indexing tabs also.
    • Billet 7075-T6 aerospace aluminum
    • Jacob Grey lightweight design
    • M4 feed ramps
    • Machined T-marks
    • Laser engraved logo
    • MIL-A-8625F Type III Class 2 hardcoat anodized flat black finish
    • Compatible with Jacob Grey Billet dust covers and MIL-SPEC AR upper receiver parts
    • Weight: 7.7oz
  • Features: Upper receiver:
    • Compatible with most aftermarket/OEM handguards featuring indexing tabs
    • Billet 7075-T6 aerospace aluminum
    • Jacob Grey lightweight design
    • M4 feed ramps
    • Machined T-marks
    • Laser engraved logo
    • MIL-A-8625F Type III Class 2 hardcoat anodized flat black finish
    • Compatible with MIL-SPEC AR upper receiver parts
    • Weight: 7.7oz
      Handguard:
    • JG 15" ULTRALIGHT Handguard
  • Features: Upper receiver:
    • Compatible with most aftermarket/OEM handguards featuring indexing tabs
    • Billet 7075-T6 aerospace aluminum
    • Jacob Grey lightweight design
    • M4 feed ramps
    • Machined T-marks
    • Laser engraved logo
    • MIL-A-8625F Type III Class 2 hardcoat anodized flat black finish
    • Compatible with MIL-SPEC AR upper receiver parts
    • Weight: 7.7oz
      Hand guard:
    • JG 13" ULTRALIGHT Handguard
  • Features: Upper receiver:
    • Compatible with most aftermarket/OEM handguards featuring indexing tabs
    • Billet 7075-T6 aerospace aluminum
    • Jacob Grey lightweight design
    • M4 feed ramps
    • Machined T-marks
    • Laser engraved logo
    • MIL-A-8625F Type III Class 2 hardcoat anodized flat black finish
    • Compatible with MIL-SPEC AR upper receiver parts
    • Weight: 7.7oz
      Hand guard:
    • JG 10" ULTRALIGHT Handguard
  • Features: Upper receiver:
    • Compatible with most aftermarket/OEM handguards featuring indexing tabs
    • Billet 7075-T6 aerospace aluminum
    • Jacob Grey lightweight design
    • M4 feed ramps
    • Machined T-marks
    • Laser engraved logo
    • MIL-A-8625F Type III Class 2 hardcoat anodized flat black finish
    • Compatible with MIL-SPEC AR upper receiver parts
    • Weight: 7.7oz
      Hand guard:
    • JG 7" ULTRALIGHT Handguard
  • Features: Upper receiver:
    • Compatible with most aftermarket/OEM handguards featuring indexing tabs
    • Billet 7075-T6 aerospace aluminum
    • Jacob Grey lightweight design
    • M4 feed ramps
    • Machined T-marks
    • Laser engraved logo
    • MIL-A-8625F Type III Class 2 hardcoat anodized flat black finish
    • Compatible with MIL-SPEC AR upper receiver parts
    • Weight: 7.7oz
      Handguard:
    • JG 15" ULTRALIGHT Handguard
  • Features: Upper receiver:
    • Compatible with most aftermarket/OEM handguards featuring indexing tabs
    • Billet 7075-T6 aerospace aluminum
    • Jacob Grey lightweight design
    • M4 feed ramps
    • Machined T-marks
    • Laser engraved logo
    • MIL-A-8625F Type III Class 2 hardcoat anodized flat black finish
    • Compatible with MIL-SPEC AR upper receiver parts
    • Weight: 7.7oz
      Handguard:
    • JG 13" ULTRALIGHT Handguard
  • Features: Upper receiver:
    • Compatible with most aftermarket/OEM handguards featuring indexing tabs
    • Billet 7075-T6 aerospace aluminum
    • Jacob Grey lightweight design
    • M4 feed ramps
    • Machined T-marks
    • Laser engraved logo
    • MIL-A-8625F Type III Class 2 hardcoat anodized flat black finish
    • Compatible with MIL-SPEC AR upper receiver parts
    • Weight: 7.7oz
      Handguard:
    • JG 10" ULTRALIGHT Handguard
  • Features: Upper receiver:
    • Compatible with most aftermarket/OEM handguards featuring indexing tabs
    • Billet 7075-T6 aerospace aluminum
    • Jacob Grey lightweight design
    • M4 feed ramps
    • Machined T-marks
    • Laser engraved logo
    • MIL-A-8625F Type III Class 2 hardcoat anodized flat black finish
    • Compatible with MIL-SPEC AR upper receiver parts
    • Weight: 7.7oz
      Handguard:
    • JG 7" ULTRALIGHT Handguard
  • Features: Upper receiver:
    • Compatible with most aftermarket/OEM handguards featuring indexing tabs
    • Billet 7075-T6 aerospace aluminum
    • Jacob Grey lightweight design
    • M4 feed ramps
    • Machined T-marks
    • Laser engraved logo
    • MIL-A-8625F Type III Class 2 hardcoat anodized flat black finish
    • Compatible with MIL-SPEC AR upper receiver parts
    • Weight: 7.7oz
      Handguard:
    • JG 15" ULTRALIGHT Handguard
  • Features: Upper receiver:
    • Compatible with most aftermarket/OEM handguards featuring indexing tabs
    • Billet 7075-T6 aerospace aluminum
    • Jacob Grey lightweight design
    • M4 feed ramps
    • Machined T-marks
    • Laser engraved logo
    • MIL-A-8625F Type III Class 2 hardcoat anodized flat black finish
    • Compatible with MIL-SPEC AR upper receiver parts
    • Weight: 7.7oz
      Handguard:
    • JG 10" ULTRALIGHT Handguard
  • Features: Upper receiver:
    • Compatible with most aftermarket/OEM handguards featuring indexing tabs
    • Billet 7075-T6 aerospace aluminum
    • Jacob Grey lightweight design
    • M4 feed ramps
    • Machined T-marks
    • Laser engraved logo
    • MIL-A-8625F Type III Class 2 hardcoat anodized flat black finish
    • Compatible with MIL-SPEC AR upper receiver parts
    • Weight: 7.7oz
      Handguard:
    • JG 7" ULTRALIGHT Handguard
  • FFL Required Before Shipping Please have your dealer email a copy of their FFL to sales@jacob-grey.com It is the responsibility of the consumer to ensure that the firearm they are purchasing is legal to ship, as presented on our website, to their dealer of choice, and that dealer is willing to accept the transfer. Features: Lower receiver:
    • Billet 7075-T6 aerospace aluminum
    • Laser engraved logo
    • MIL-A-8625F Type III Class 2 hardcoat anodized finish
    • Compatible with MIL-SPEC lower receiver parts
    • Dimensional accuracy inspected
    • All sharp edges de-burred by hand.
    • Multi caliber marking for build versatility
    • Flared and beveled magwell
    • Set screw installation for bolt catch
    • Integrated winter trigger guard
    • Weight: 7.9oz
    Upper receiver:
    • Compatible with most standard mil-spec handrails with indexing tabs also.
    • Billet 7075-T6 aerospace aluminum
    • Jacob Grey lightweight design
    • M4 feed ramps
    • Machined T-marks
    • Laser engraved logo
    • MIL-A-8625F Type III Class 2 hardcoat anodized flat black finish
    • Compatible with Jacob Grey Billet dust covers and MIL-SPEC AR upper receiver parts
    • Weight: 7.7oz
  • Features
    • Compatible with most aftermarket/OEM handguards featuring indexing tabs
    • Billet 7075-T6 aerospace aluminum
    • Jacob Grey lightweight design
    • M4 feed ramps
    • Machined T-marks
    • Laser engraved logo
    • MIL-A-8625F Type III Class 2 hardcoat anodized flat black finish
    • Compatible with Jacob Grey Billet dust covers and MIL-SPEC AR upper receiver parts
    • Weight: 7.7oz
  • SPECIFICATIONS: Caliber: 5.56 NATO / .223 Rem. Profile: Government Finish: QPQ Nitride Gas Placement: Pistol-Length Gas Seat: 0.750" Twist Rate: 1:7 Weight: 28 oz. Material: 4150 Chrome Moly Vanadium Steel M4 Feed Ramps: Yes Muzzle Thread Pattern: 1/2”-28 COMPATIBILITY: AR-15 upper receivers
  • SPECIFICATIONS: Caliber: 5.56 NATO / .223 Rem. Profile: Government Finish: QPQ Nitride Gas Placement: Carbine-Length Gas Seat: 0.750" Twist Rate: 1:7 Weight: 28 oz. Material: 4150 Chrome Moly Vanadium Steel M4 Feed Ramps: Yes Muzzle Thread Pattern: 1/2”-28 COMPATIBILITY: AR-15 upper receivers
  • SPECIFICATIONS: Caliber: 5.56 NATO / .223 Rem. Profile: Government Finish: QPQ Nitride Gas Placement: Mid-Length Gas Seat: 0.750" Twist Rate: 1:7 Weight: 28 oz. Material: 4150 Chrome Moly Vanadium Steel M4 Feed Ramps: Yes Muzzle Thread Pattern: 1/2”-28 COMPATIBILITY: AR-15 upper receivers   FEATURES: Made from high-quality 4150 CMV steel barrel blanks All Jacob Grey barrels are guaranteed to give sub Minute of Angle (MOA) accuracy with match grade ammunition (By Manufacturer) High pressure tested (HPT) and Magnetic particle Inspection (MPI) Coated with QPQ corrosion resistant finish *A barrel that is shorter than 16" is only for use on a pistol configuration firearm or a NFA registered Short-Barreled Rifle (SBR). All NFA laws apply!
  • SPECIFICATIONS: Caliber: .300 Blackout Length: 6" Gas Seat: 0.750" Gas Placement: Pistol-Length Twist Rate: 1:7 Material: CMV Alloy M4 Feed Ramps: Yes Muzzle Thread Pattern: 5/8"-24 Finish: QPQ Nitride COMPATIBILITY: JG-15 Upper receiver or any Mil-Spec AR-15 upper receiver  
  • SPECIFICATIONS: Caliber: .300 Blackout Length: 7.5" Gas Seat: 0.750" Gas Placement: Pistol-Length Twist Rate: 1:7 Material: CMV Alloy M4 Feed Ramps: Yes Muzzle Thread Pattern: 5/8"-24 Finish: QPQ Nitride COMPATIBILITY: JG-15 Upper receiver or any Mil-Spec AR-15 upper receiver   FEATURES: 4150 Chrome Moly Vanadium Made in the U.S.A. Made from high-quality barrel blanks All Jacob Grey barrels are guaranteed to give sub Minute of Angle (MOA) accuracy with match grade ammunition (By Manufacturer) High pressure tested (HPT) and Magnetic particle Inspection (MPI) Coated with QPQ corrosion resistant finish *A barrel that is shorter than 16" is only for use on a pistol configuration firearm or a NFA registered Short-Barreled Rifle (SBR). All NFA laws apply!
  •     FEATURES: 4150 Chrome Moly Vanadium Made in the U.S.A. Made from high-quality barrel blanks All Jacob Grey barrels are guaranteed to give sub Minute of Angle (MOA) accuracy with match grade ammunition (By Manufacturer) High pressure tested (HPT) and Magnetic particle Inspection (MPI) Coated with QPQ corrosion resistant finish *A barrel that is shorter than 16" is only for use on a pistol configuration firearm or a NFA registered Short-Barreled Rifle (SBR). All NFA laws apply!   SPECIFICATIONS: Caliber: .300 Blackout Length: 10 " Gas Seat: 0.750" Gas Placement: Pistol-Length Twist Rate: 1:7 Material: CMV Alloy M4 Feed Ramps: Yes Muzzle Thread Pattern: 5/8"-24 Finish: QPQ Nitride COMPATIBILITY: JG-15 Upper receiver or any Mil-Spec AR-15 upper receiver
  • SPECIFICATIONS: Caliber: .300 Blackout Length: 16" Gas Seat: 0.750" Gas Placement: Pistol-Length Twist Rate: 1:7 Material: CMV Alloy M4 Feed Ramps: Yes Muzzle Thread Pattern: 5/8"-24 Finish: QPQ Nitride COMPATIBILITY: JG-15 Upper receiver or any Mil-Spec AR-15 upper receiver DETAILS:
  • Specifics: Made from 4150 CMV hardened and stress relieved. 1-10 rh twist. Chambered in 7.62 x 39 .750"diameter gas seat 5/8-24 thread for attaching muzzle device. Pistol length gas system
  • Specifics: Made from 4150 CMV hardened and stress relieved. 1-10 rh twist. Chambered in 7.62 x 39 .750"diameter gas seat 5/8-24 thread for attaching muzzle device. Carbine length gas system
  • Specifics: Made from 4150 CMV hardened and stress relieved. 1-10 rh twist. Chambered in 7.62 x 39 .750"diameter gas seat 5/8-24 thread for attaching muzzle device. Carbine length gas system
  • SPECIFICATIONS: Material: 4140 Tool Steel Finish: Unfinished/Traditional Blued/Bead Blasted Weight: 39g
  • Product Specifications: Barrel Material: 4150 CMV Steel Barrel Type: Button Rifled Barrel Caliber: 9MM SAAMI (9x19mm Parabellum) Barrel Twist: 1:10 Barrel Length: 4” Barrel Profile: Light (.675" at the thinnest cross-section) Inside Finish: Black QPQ Salt Bath Nitride Outside Finish: Black QPQ Salt Bath Nitride Muzzle Thread: 1/2x36" TPI (Threads Per Inch) Barrel Extension: AR15 (Will work with any Milspec AR15/AR-9 Upper Receiver) Integrated feed ramp Designed to work with both Colt and Glock style AR-9 builds Specifically designed to complement the Jacob Grey JG-9 Upper receiver.
  • SPECIFICATIONS: Material: 4140 Tool Steel Finish: Unfinished/Traditional Blued/Bead Blasted Weight: 39g
  • SPECIFICATIONS: Material: 4140 Tool Steel Finish: Unfinished/Traditional Blued Weight: 39g
  • Product Specifications: Barrel Material: 4150 CMV Steel Barrel Type: Button Rifled Barrel Caliber: 9MM SAAMI (9x19mm Parabellum) Barrel Twist: 1:10 Barrel Length: 7” Barrel Profile: Light (.675" at the thinnest cross-section) Inside Finish: Black QPQ Salt Bath Nitride Outside Finish: Black QPQ Salt Bath Nitride Muzzle Thread: 1/2x36" TPI (Threads Per Inch) Barrel Extension: AR15 (Will work with any Milspec AR15/AR-9 Upper Receiver) Integrated feed ramp Designed to work with both Colt and Glock style AR-9 builds Specifically designed to complement the Jacob Grey JG-9 Upper receiver.
  • SPECIFICATIONS: Material: 4140 Tool Steel Finish: Unfinished/Traditional Blued Weight: 39g
  • SPECIFICATIONS: Material: 4140 Tool Steel Finish: Unfinished/Traditional Blued Weight: 39g
  • SPECIFICATIONS: Material: 4140 Tool Steel Finish: Unfinished/Traditional Blued Weight: 39g
  • Specifications: Material-6AL-4V Finish-Polished Titanium Weight-26g
  • Specifications: Material-6AL-4V Finish-Polished Titanium Weight-26g
  • SPECIFICATIONS Action:  Semi-Automatic Barrel Length: 7.5 in Caliber:  5.56 NATO/.223 Rem Ejection Orientation:  Right-Handed Ejection Operation Type:  Direct Impingement Barrel Lining: Nitride Barrel Material: Chrome Moly Vanadium Barrel Profile: Gov 7.5” 5.56 NATO 1/2X28 Threaded Barrel Barrel Twist Rate: 1/7 Twist Gas System Type: Pistol Length with Low Profile Gas Block Handguard Attachment Interface: M-LOK Handguard Color: Black Handguard Length: 7 in Handguard Model: 7" Jacob Grey 7-sided M-LOK Tactical Handguard Line / Series: Jacob Grey JG-15 Muzzle Device Function: Flash Hider Pivot/Takedown Pin Size: .277 in Upper Receiver Finish/Coating: Class III Type 2 Hard Coat Anodizing Upper Receiver Material: 7075 T6 Aluminum BCG: Yes Charging Handle: Yes
  • SPECIFICATIONS Action:  Semi-Automatic Barrel Length: 10.5 in Caliber:  5.56 NATO/.223 Rem Ejection Orientation:  Right-Handed Ejection Operation Type:  Direct Impingement Barrel Finish: Nitride Barrel Material: Chrome Moly Vanadium Barrel Profile: Gov 7.5” 5.56 NATO 1/2X28 Threaded Barrel Barrel Twist Rate: 1/7 Twist Gas System Type: Pistol Length with Low Profile Gas Block Handguard Attachment Interface: M-LOK Handguard Color: Black Handguard Length: 10 in Handguard Model: 10" Jacob Grey 7-sided M-LOK Tactical Handguard Line / Series: Jacob Grey JG-15 Muzzle Device Function: Flash Hider Pivot/Takedown Pin Size: .277 in Upper Receiver Finish/Coating: Class III Type 2 Hard Coat Anodizing Upper Receiver Material: 7075 T6 Aluminum BCG: Yes Charging Handle: Yes
  • SPECIFICATIONS Action:  Semi-Automatic Barrel Length: 13 in Caliber:  5.56 NATO/.223 Rem Ejection Orientation:  Right-Handed Ejection Operation Type:  Direct Impingement Barrel Finish:  Nitride Barrel Lining: Nitride Barrel Material: Chrome Moly Vanadium Barrel Profile: Gov 7.5” 5.56 NATO 1/2X28 Threaded Barrel Barrel Twist Rate: 1/7 Twist Gas System Type: Pistol Length with Low Profile Gas Block Handguard Attachment Interface: M-LOK Handguard Color: Black Handguard Length: 13 in Handguard Model: 13" Jacob Grey 7-sided M-LOK Tactical Handguard Line / Series: Jacob Grey JG-15 Muzzle Device Function: Flash Hider Pivot/Takedown Pin Size: .277 in Upper Receiver Finish/Coating: Class III Type 2 Hard Coat Anodizing Upper Receiver Material: 7075 T6 Aluminum BCG: Yes Charging Handle: Yes
  • SPECIFICATIONS Action:  Semi-Automatic Barrel Length: 16 in Caliber:  5.56 NATO/.223 Rem Ejection Orientation:  Right-Handed Ejection Operation Type:  Direct Impingement Barrel Coating: Nitride Barrel Finish:  Nitride Barrel Lining: Nitride Barrel Material: Chrome Moly Vanadium Barrel Profile: Gov 16” 5.56 NATO 1/2X28 Threaded Barrel Barrel Twist Rate: 1/7 Twist Gas System Type: Pistol Length with Low Profile Gas Block Handguard Attachment Interface: M-LOK Handguard Color: Black Handguard Length: 15 in Handguard Model: 15" Jacob Grey 7-sided M-LOK Tactical Handguard Line / Series: Jacob Grey JG-15 Muzzle Device Function: Flash Hider Pivot/Takedown Pin Size: .277 in Upper Receiver Finish/Coating: Class III Type 2 Hard Coat Anodizing Upper Receiver Material: 7075 T6 Aluminum BCG: Yes Charging Handle: Yes
  • Specifications: Caliber: .300 Blackout Length: 6″ Gas Seat: 0.750″ Gas Placement: Pistol-Length Twist Rate: 1:7 Material: CMV Alloy M4 Feed Ramps: Yes Muzzle Thread Pattern: 5/8″-24 Finish: QPQ Nitride (Barrel only)   Additional Features: Jacob Grey Ambidextrous Charging Handle Jacob Grey 7” Hand Guard JG 3-Stage Muzzle Brake JG 300 AAC/5.56/.223 Rem Nitride BCG JG Billet Dust Cover Class III Type 2 Hard coat anodized finish Pistol length gas tube Low profile JG Gas block
  • SPECIFICATIONS: Caliber: .300 Blackout Length: 8" Gas Seat: 0.750" Gas Placement: Pistol-Length Twist Rate: 1:7 Material: CMV Alloy M4 Feed Ramps: Yes Muzzle Thread Pattern: 5/8"-24 Finish: QPQ Nitride (Barrel only)
  • Specifications: Caliber: .300 Blackout Length: 9″ Gas Seat: 0.750″ Gas Placement: Pistol-Length Twist Rate: 1:7 Material: CMV Alloy M4 Feed Ramps: Yes Muzzle Thread Pattern: 5/8″-24 Finish: QPQ Nitride (Barrel only)   Additional Features: Jacob Grey Ambidextrous Charging Handle Jacob Grey 10” Hand Guard JG 3-Stage Muzzle Brake JG 300 AAC/5.56/.223 Rem Nitride BCG JG Billet Dust Cover Class III Type 2 Hard coat anodized finish Pistol length gas tube Low profile JG Gas block
  • Specifications: Caliber: .300 Blackout Length: 10" Gas Seat: 0.750" Gas Placement: Pistol-Length Twist Rate: 1:7 Material: CMV Alloy M4 Feed Ramps: Yes Muzzle Thread Pattern: 5/8"-24 Finish: QPQ Nitride (Barrel only)   Additional Features: Jacob Grey Ambidextrous Charging Handle Jacob Grey 10” Hand Guard JG 3-Stage Muzzle Brake JG 300 AAC/5.56/.223 Rem Nitride BCG JG Billet Dust Cover Class III Type 2 Hard coat anodized finish Pistol length gas tube Low profile JG Gas block
  • Specifications: Caliber: .300 Blackout Length: 13" Gas Seat: 0.750" Gas Placement: Pistol-Length Twist Rate: 1:7 Material: CMV Alloy M4 Feed Ramps: Yes Muzzle Thread Pattern: 5/8"-24 Finish: QPQ Nitride (Barrel only)   Additional Features: Jacob Grey Ambidextrous Charging Handle Jacob Grey 13” Hand Guard JG 3-Stage Muzzle Brake JG 300 AAC/5.56/.223 Rem Nitride BCG JG Billet Dust Cover Class III Type 2 Hard coat anodized finish Pistol length gas tube Low profile JG Gas block
  • SPECIFICATIONS: Material: 6061 Billet aluminum Weight: .3oz Fits Jacob Grey, Odin Works, New Frontier, PSA style lowers Available in anodized black
  • 9mm Actuator Lower Parts Included: 4140 Steel Ejector Steel LRBHO Actuator Roll Pin Lightened Bolt Catch Spring Allen Wrench Threaded Bolt Catch Screw
  • Specifications: Material-6AL-4V Finish-Polished Titanium Weight-26g Fits Models
    • Auto Ordnance 1911A1
    • Auto Ordnance Pit Bull
    • Colt 1991A1
    • Colt Government Model
    • Colt Gold Cup
    • Ithaca 1911A1
    • Military Issue 1911A1
    • Norinco 1911
    • Para-Ordnance GI Expert
    • Para-Ordnance P-12
    • Para-Ordnance P-13
    • Para-Ordnance P-14
    • Remington R1
    • Rock Island Armory Full-Size 1911
    • Rock River 1911
    • Springfield Armory Mil-Spec 1911
  • SPECIFICATIONS: Caliber: .300 Blackout Length: 8" Gas Seat: 0.750" Gas Placement: Pistol-Length Twist Rate: 1:7 Material: CMV Alloy M4 Feed Ramps: Yes Muzzle Thread Pattern: 5/8"-24 Finish: QPQ Nitride (Barrel only)
  • Specifications: Caliber: .300 Blackout Length: 10" Gas Seat: 0.750" Gas Placement: Pistol-Length Twist Rate: 1:7 Material: CMV Alloy M4 Feed Ramps: Yes Muzzle Thread Pattern: 5/8"-24 Finish: QPQ Nitride (Barrel only)   Additional Features: Jacob Grey Ambidextrous Charging Handle Jacob Grey 10” Hand Guard JG 3-Stage Muzzle Brake JG 300 AAC/5.56/.223 Rem Nitride BCG JG Billet Dust Cover Class III Type 2 Hard coat anodized finish Pistol length gas tube Low profile JG Gas block

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