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Rifle Kit, 20", A2, HBAR

  • Model: AR-RK20A2s
  • Shipping Weight: 1lbs
  • 18 Units in Stock

$449.00

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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
F Marked Front Sight Base
Manganese Phosphate finish barrel

This 5.56mm caliber barrel is 20" 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 barrels are of heavy-weight (.950 diameter under the handguards, .750 under the front sight base) dimension their full length which alleviates barrel whip and enhances accuracy in semi auto fire and helps dissipate heat. 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 7075T6511forgings, 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 barrel has a forged A2 front sight base with bayonet lug, not the cheaper cast front sight base which can break. It sports A2 rifle handguards with ALUMINUM heat shields.

This kit includes a removable aluminum A2 carry handle with built in A2 sights with match adjustments.  This handle can be removed to expose the M1913 Picatinny rail on the upper receiver for use as a flat top.  This is the best of both worlds!

The buttstock is a 6 position telescoping stock designed for a stable cheek weld in any position.  It features a paddle release, rubber butt pad and is of standard A2 length when fully extended.  It also comes STANDARD with a Double sling hook locking plate.

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 and magazine, even though shown in the picture, are NOT included).

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

If you would prefer a Mil Spec A2 (solid) stock, simply order item  "AR-A2buttsub" on the SAME order as this kit. Here is the link:  http://blackthorneproducts.com/cart/index.php?main_page=product_info&cPath=6_14&products_id=502

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 Friday 06 May, 2016.

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