20 inch heavy barrel rifle kit. Does not come with lower receiver or magazine.

AR-15 20 Rifle Kit

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20" AR-15 complete rifle kit.

20” AR-15 Heavy barrel 1x9 twist barrel attached to a 7075 T6 forged aluminum upper with A-2 Length rifle hand guards and comes with A-3 flat-top upper. Comes with everything to turn your stripped lower receiver into a standard 20" AR-15 rifle.  5.56 NATO Chamber and bore

This AR-15 20 inch rifle kit has everything you need (less the lower receiver). This kit has a complete 20" flattop upper receiver with bolt carrier group, charging handle, A-2 handguards, front sight assembly or gas block option, A-2 flash hider with options, and is head spaced.  The AR-15 rifle kit also contains a complete lower receiver parts kit and a complete A2 Stock assembly. Once the lower parts kit & stock, included with this kit are installed to any standard AR-15 lower receiver ( lower receiver not included ), you mount the complete upper to the lower and you have a fully functional rifle that is ready to fire. 

Fully assembled Complete Upper Receiver Specs:
Upper Receiver: Forged 7075T6 A4 Flattop, Mil-Spec Hard coat Black anodized and Dry Film lubed ( interior )
MilSpec 5.56 Bolt Carrier Group & Charging Handle
Front Sight: Mil-Spec Forged “F” Front Sight Base with Bayonet Lug
Flash Hider: Standard A2
Barrel Length: 20 Inches
Chamber: 5.56 NATO
Barrel Material: Chrome Moly 4140 Steel
Barrel Twist Rate: 1:9
Barrel Profile: .750" Diameter Heavy Barrel
Hand-guards: Black Composite w/ Heat shield
M4 Style Feed Ramps
AR-15 Lower Receiver Parts Kit: AR-15 Complete Lower Receiver Parts Kit with Pistol Grip. 
Lower receiver parts Made by current government contractors and will work with any MilSpec lower receiver.
The parts kits include: Pistol Grip, Trigger, Hammer, Disconnector, Selector, Bolt Catch, Bolt Catch Spring, Bolt Catch Detent, Bolt Catch roll pin, buffer detent Spring, buffer detent, Take Down and pivot pin Detents, Take down and pivot pin springs, Magazine Catch Spring, Magazine Catch Button, Magazine Catch, Front Pivot Pin, Rear take down pin, Hammer Spring, AR-15 Hammer, Trigger Spring, AR-15 Trigger, Pistol Grip Screw, Pistol Grip Lock Washer, Selector detent Spring, Selector Detent, AR-15 Selector, Hammer Pin, Trigger Pin, Take Down Pin, Buffer Retainer Pin, Buffer Retainer Spring, and Disconnector Spring.
The stock kit also includes a complete buttstock assembly to include the buffer tube, buffer, buffer spring, buttstock body, spacer, and hardware for the A-2 buttstock.  Other buttstock options are available.
All Parts in our Kits are Made in The U.S.A.!  NO Chinese knockoff parts, cheap kits=cheap parts.