.300 Blackout AR 15 Side-Charging Rifle Kit – 16″ Stainless and Black Nitride Fluted Heavy Barrel, 1:8 Twist Rate with 12″ M-Lok Handguard

Please note: We strive to provide the most accurate photographs of our product. Due to availability limitations and supply chain constraints, slight variations of the handguard of this upper assembly may occur in the aesthetics of the skeletonizations in between the M-Lok sections.

If you’ve caught that certain spark, and now you’re looking to build your own AR-15 chambered in .300BLK (.300 AAC blackout), you might as well do it with some damned style. Check out this .300BLK built kit. The core of its attitude is a 16-inch stainless steel barrel that’s been coated in black nitride and given bear claw fluting for that extra in-your-face flair. Plus, it’s side-charging, so your new baby won’t be boring. It’s also got a 12″ free-floating M-Lok handguard on which to mount your light, laser, or whatever else.

Plus, we give you most of the extras you’ll need to complete the whole kit. You get a mil-spec buffer tube assembly and butt stock that adjusts in the standard six positions and of course a mil-spec lower parts kit. All you need to do is finish and add your own 80% lower either in 7075 forged aluminum or 6061 T6 billet aluminum. Then of course, top it off with the backup sights or optic of your choice. Please note, mags and ammo are not included.

What’s Included 

This kit is not a firearm. It includes an assembled upper receiver, lower parts kit, and buffer assembly with buttstock. 

Here’s the beginner’s guide to ghostgunkitforsale.com.

300 Blackout AR Kit Specs

Barrel

• Chamber: .300 AAC Blackout
• Contour: Heavy
• Length: 16”
• Twist Rate: 1:8
• Gas System: Carbine
• Gas Port: 0.750”
• Gas Hole Dia.: 0.070”
• Muzzle Threads: 5/8×24
• Feed Ramps: M4
• Material: 4150 CMV
• Finish: Stainless Steel and Black Nitride
• Process: Button Rifled
• Lining: None
• Extension: M4
• Muzzle: A2 “Birdcage” Flash Hider

Handguard

• Attachment System: 12″ M-Lok
• Finish: Type III Hardcoat Anodized (Mil-Spec)
• Top Rail: M1913 Picatinny
• Material: Billet 6061-T6 Aluminum
• Attachment: Barrel Nut 

Upper Receiver

• Profile: M4 Flattop
• Material: Forged 7075-T6 Aluminum
• Finish: Type III Hardcoat Anodized (Mil-Spec)

Bolt Carrier Group

• Profile: M16/Full-Auto
• Steel: 9310 Tool, HPT/MPI-tested
• Exterior: Black Nitride
• Interior: Chrome-Lined
• Gas Key: Staked, Chrome-lined
• Charging Handle: Included

Lower Receiver Parts

• Buffer System: Mil-spec, Carbine
• Buttstock: Mil-spec, M4-type
• Parts Kit: Mil-spec, single-stage

Lower receiver sold separately. 

WARNING: Handling firearms parts and certain firearm accessories can expose you to lead and other petroleum products known to the State of California to cause cancer and reproductive harm. For more information, visit www.P65Warnings.ca.gov 

Shipping Restrictions 

We cannot ship certain parts and accessories to states that prohibit the sale or ownership of such components, like California, New York, and others. Before ordering, see our shipping restrictions for a list of all prohibited states and locales. We try our best to keep our shipping restrictions current, but state laws change almost daily. It is your responsibility to be aware of your local firearms laws before purchasing from our website or machining a firearm. 

ghostgunkitforsale.com only ships within the United States. Federal law prevents international shipments of our products.