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300 Blackout AR 15 Upper CBA AR15 Upper 16” Stainless >>

CBA AR15 Upper 16” Stainless Fluted HBAR 300 AAC Blackout AR Upper Zoom


CBA AR15 Upper 16” Stainless Fluted HBAR 300 AAC Blackout

In Stock
Processing time 5-7 days for most in stock items.

  • Length: 16"
  • Caliber: 300 Blackout
  • Type: HBAR Fluted
  • Material: 416R Stainless Steel
  • Twist Rate: 1:7
  • Gas System: Carbine
  • Attachment: Muzzle Break
  • Handguard: Free Float Quad Rail


Availability: Out of stock

Regular Price: $599.00

Now only: $449.99

Product Description


POU: (Purpose of Use)

Have you been searching for a heavy hitting AR upper? The search is over, this ar upper offers devastating stopping power and maximum accuracy. This tactical upper is equipped with a stainless 16" HBAR fluted barrel. For more info on barrel types please click here. With an ideal weight just over 4 lbs this pistol upper is the a great choice for a hunting or a sport shooting AR upper. Whether you are using this ar upper for self defense or a fun day target shooing you can count on this upper. Remember all cbarms brand products come with a lifetime warranty backed by our 100% satisfaction guarantee. Read our lifetime warranty guarantee.

Detailed Specs:

  • Length: 16"
  • Caliber: 300 AAC Blackout
  • Type: Straight Fluted Heavy Barrel
  • Material: 416R Stainless
  • Twist Rate: 1:7
  • Gas System: Carbine with Rail Gas Block
  • Hand Guard:Free Float Quad Rail
  • Flash Hider: Stainless Muzzle Brake

Detailed Specs:

    • eXtreme Tactical 16" 416R Stainelss Fluted Heavy Barrel Barrel Mil Spec 1:7 Twist. Hardened to 26-32 rc and stress relieved. Chambered in 300 blackout. Button rifled. .750 under gas block. 5/8-24 threads flash hider and crush washer. M4 feedramps. A3 flat top upper receiver - made from certified 7075-t6 aluminum forgings. Black hardcoat anodized and teflon coated to gov. specs. Proper white "t-marks" on rails. Forward assist and dust cover installed. Railed Gas Block. Carbine length Gas System.

Additional Information

Additional Information

Price $599.00


Great Quality ProductReview by Jimmy
I must say, I'm very pleased with the AR-15 300 Blackout Stainless Fluted Barrel on the Upper Receiver that I received from Custom Built Arms. I installed it on Spike’s Tactical Lower Receiver for which it fits like a glove, looks great, and shoots straight. I took it to the range to fire it, and it was like having a new car out for a test drive. My 300 Blackout Upper Receiver really stood out in the crowd, as a Stainless Steel Beauty. Yes, I will buy from Custom Built Arms again, and Five Stars is the right rating. “Great Quality and Workmanship” (Posted on 12/14/14)
Great UpperReview by Thomas
Have installed on Spikes lower with perfect fit, looks great, shoots straight! Lot of looks while shooting with this stainless steel beauty. (Posted on 10/23/14)
Excellent quality and customer serviceReview by Rick
Prior to purchasing, I sent an email to customer service asking about modifying the hand guard. I received a very prompt reply suggesting that I also switch to a low profile gas block and gas tube. I ordered the upper with the longer hand guard and gas block and the order was shipped within 48 hours. The order wasn't exactly correct when it arrived but a quick email to customer service and the problem was promptly remedied. I'm very impressed with the quality of the upper and the value. I thought that I was doing a medium grade build but when the upper arrived, I found that I was doing a first class build! Customer service (Will) was fast to respond and communicated and updated often. Again, CBA exceeded my expectations! I will buy from them again and have already recommended CBA to a few friends also building. Five stars for sure, a great company! (Posted on 10/12/14)

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CBA AR15 Upper 16” Stainless Fluted HBAR 300 AAC Blackout . US

Rating: 5/5 based on 3 review(s)
  • Price: $449.99 - Out of stock

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