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Rifle Kit, 8.5", A3

  • Model: AR-RK8-FFS
  • 44 Units in Stock

$249.00

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This COMPLETE PARTS KIT (less stripped lower receiver) 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

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. 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 5.3.1.2 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 barrel is an mid-weight contour (tapered under the handguards, .750 under the front sight base).  This contour dissipates heat and alleviates barrel whip. 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 7075T6.511 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.

This kit features a tubular, hardcoat anodized, machined aircraft aluminum handguard.  This handguard completely free floats the barrel for increased accuracy and is knurled for a sure grip. This setup is great for optics equipped rifles because the gas block does not obstruct the sight picture as a front sight base would.

The heavy duty buffer tube with foam.

All semi auto lower receiver parts are INCLUDED as well as semi auto bolt, carrier, and charging handle. The upper is COMPLETELY ASSEMBLED. Each and every part to the gun is included EXCEPT the stripped lower receiver! (A complete firearm is pictured, the lower receiver, sights, vertical grips, etc. and magazine, even though shown in the picture, are NOT included)

If you would like to order a removable carry handle with match A2 sights installed, order one here:  http://blackthorneproducts.com/cart/index.php?main_page=product_info&cPath=6_14&products_id=800

Don't forget the Mil Spec Aluminum, 30 round magazines: 
http://blackthorneproducts.com/cart/index.php?main_page=product_info&cPath=6_14&products_id=1148

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. Here is the link: http://blackthorneproducts.com/cart/index.php?main_page=product_info&cPath=0&products_id=300

Since this parts kit does not include the receiver, no FFL is required. Like all of our AR parts kits, this is MADE IN USA!

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This product was added to our catalog on Sunday 26 July, 2009.

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