8.5" 300 BLACKOUT Stainless AR15 Pistol Upper Assembly with 10" Rail and Slim Cone Flash Can
The 300 AAC Blackout was designed to achieve energies like the 7.62x39 Soviet in an AR16 while using standard AR15 magazines at their full capacity. The 7.62 Soviet's cartridge taper prevented reliable feeding in AR magazines and created wear on the bolt. From the 14.5in barrel of the AR15, the 556 round has an effective point target range of 500 yards. The bullet has significant drop, drift, and energy loss at that distance. From a 16in barrel, a 125gr 300 BLK round has a lower velocity and similar bullet drop and drift at shorter distances. However, it has the same amount of energy at 700 yards that the 556 has at 500 yards. In terms of hit probability, the Blackout has an effective range of 450 yards. From a 9in barrel, the 125 gr BLK round has the same muzzle energy as the 556 from a AR15, and 5 percent more energy at 440 yards. In comparison with 7.62×39mm rounds, 300 BLK rounds with varying loads have a better ballistics and more energy out of similar length barrels.
- 8.5" 300 BLACKOUT 416R Stainless Medium Contour Barrel with 1x8 Twist and 5/8x24 Threads.
- Mil-Spec Upper Receiver forged from 7075 T6 aluminum with forward assist and dust cover assembly installed. Hard coat anodized MIL-STD 8625 Type 3 Class 2.
- 10" Narrow Profile Free Float Rail machined from 6061 T6 aluminum. Very comfortable and very light weight. Your choice of M-LOK or KEYMOD attachment points along the entire length at 3, 6, and 9 positions. Hard coat anodized MIL-STD 8625 Type 3 Class 2.
- 0.750" Low Profile Gas Block.
- Pistol Length Gas System.
- Slim Cone Flash Can with crush washer.
- AR15parts will customize (to your specificaions in the drop down menu) your AR15 upper with the Rail Type (M-LOK or KEYMOD), a Magazine or two, one of our High Quality Bolt Carrier Groups, and your choice of 5 different Charging Handles.
This upper assembly will fit all standard AR15 lower receivers.
This item is "Firearm Parts", not a complete firearm (no serialized components). It will be shipped directly to you with no FFL transfer required.
You are responsible for knowing federal, state and local laws applicable to this item. AR15Parts.com reserves the right to not ship to addresses where it may not be legal to own this item.
ReviewsHoward NineAmazing customer service. Order a upper. Had a small issue, handled is with ease and sent out a new upper while still returning old one. Still waiting for refund but IÃ¢â‚¬â„¢m sure theyÃ¢â‚¬â„¢re good for it.Howard Nine
Ar15 upperAmazing customer service. Order a upper. Had a small issue, handled is with ease and sent out a new upper while still returning old one. Still waiting for refund but I'm sure they're good for it.Ben
10.5" 300blk UpperOverall very happy with ordering this product. Excellent customer service. Quick email replies. I even spoke over the phone with the owner. He sent pictures of what my upper looked like. Easy purchase and overall happy! I have not shot the upper yet. From what I see and feel it is of great quality. I requested a parts list since they use a variety of barrels etc. I have not received it yet. I look forward to shooting it.Anonymous
SmoothAwesome product! Everything went smoothlyCletus Browne
Great experienceThank you for a great experience and quality productsLuke
Great product, fast shippingReceived in a timely fashion and excellent quality for the price.Neil Peterson
UpperFast, awesome service.
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DetailsCurrent Stock: 5SKU: UA30B85SS08HC24P_10ML00_SCUPC:Availability: Usually Ships in 24 HoursOld SKU: 85300SSU1x7MLRLA2