This UPPER ASSEMBLY has the following standard features:
M4 Feed Ramp barrel extension
T-Marked forged upper receiver
1-9" twist, 6 grooves, right hand
5.56mm chamber (shoot either 5.56mm or .223)
11595E (SAE 4150) Barrel steel
Manganese Phosphate finish barrel
AR15 / M16 upper with 8.5" inch barrel and A3 Upper receiver. This 5.56mm caliber barrel is 8.5" long, threaded the standard 1/2 x 28 tpi, and has an A2 flash hider with the correct crush washer and a correctly sized gas port for reliable function. It sports a carbine length, aluminum alloy handguard. This hand guard is knurled for a positive grip, hardcoat anodized for long life and scratch resistance, and completely free floats the barrel, enhancing accuracy and dissipating heat. It is a two piece design for ease of cleaning. The gas block is machined from aircraft aluminum and hardcoat anodized IAW Mil Spec A8625, Type III, Class II, black per No. 37038, Table IX with nickel acetate seal and fits under the handguard. The barrel is machined from chrome-moly, high vanadium steel and hardened to a U.S. government Mil-spec of Rc 26-32. The barrel, and all external steel parts, are manganese phosphate finished IAW 18.104.22.168 of Mil-STD-171, the U. S. government's recommended protective finish for steel. This finish not only looks great, it affords complete corrosion protection. These barrels are .750 under the front sight base and dimensioned to alleviate barrel whip and enhance accuracy. The barrel is button rifled with 6 grooves, right hand, 1 / 9 twist. The 1/9 twist is best because it handles the widest variety of ammunition and bullet weights.
The barrel is mounted on a FORGED A3 upper receiver with built in Mil-spec M1913 Picatinny accessory rail, with the correct rail numbers engraved, made from certified forgings, hardcoat anodized IAW Mil Spec A8625, Type III, Class II, black per No. 37038, Table IX with nickel acetate seal, as per the Mil-spec. The upper features a forward assist and hinged ejection port cover. The upper is FULLY ASSEMBLED. The upper is fully assembled. Drop in your bolt/carrier and charging handle, check headspace and let her rip!
This upper has an M-LOK handguard which makes attaching accessories a snap!
Add a BOLT CARRIER GROUP if you need one. (You must ACTUALLY Order part # AR-PA-8 for the BOLT CARRIER GROUP on your web order form and it must charge you for it, if you do not see it on your form, you have not ordered it and will not receive a BCG. Do NOT just put it in the special instructions). MADE IN USA.
PLEASE NOTE: For CHROMED barrel interior and chamber, You must ACTUALLY Order part # AR-CHROME on your web order form, if you do not see it and it does not charge you $50 on your form, you have not ordered it and will not receive a chromed barrel. Do NOT just put it in the special instructions. If you just put AR-CHROME in the special instructions you will NOT receive a chromed barrel, it MUST be in the order form body and it MUST charge you $50. Here is the link for AR-CHROME: http://blackthorneproducts.com/cart/index.php?main_page=product_info&cPath=0&products_id=300
This product was added to our catalog on Wednesday 28 August, 2019.