Welcome to Cheaper Than Dirt! Shop 200,000+ deals on firearms, ammunition, gun parts, survival gear and more. All in stock and ready to ship.
| Next

ATI AR-15 Rifle Build Kit 5.56 NATO 16" M4 Barrel Collapsible Stock Complete Less Lower and Trigger Guard RKT02

American Tactical Imports
Typically ships within 1 to 2 business days.
We regret that this item is not available at this time.
Can we ship this to you?
American Tactical Imports provides the tinkerer in you with everything you need to turn a stripped AR-15 lower into a working rifle. The barrel - the heart of any build - is a 16" M4 profile with 5.56 NATO chamber and Mil-Spec 1:7 twist. The 1/2x28 threaded muzzle features and A2 flash hider. The upper receiver and gas block are railed so you can add iron sights or a scope at your preference. The Collapsible M4 stock features 6 positions of adjustability for a proper fit to any sized marksman. The trigger guard is left out of the included lower parts kit in case you want to select your own or the lower you are using already includes one.

Just add a lower and sights and enjoy!

NOTE: The manufacturer mistakenly stamped the barrels on this kit ".223 Remington". The chamber is actually 5.56 NATO and rifles completed with this kit can shoot both .223 Remington and 5.56 NATO ammunition.

Specifications and Features:
Complete AR-15 upper receiver assembly
16" M4 profile barrel
5.56x45mm NATO chamber (accepts .223 Remington)
1:7 Twist
A2 Flash hider
Picatinny railed gas block
6 Position M4 collapsible stock
A2 pistol grip and lower parts kit (no trigger guard) 
Total number of Reviews: 6

Submit a review

5.0 5
"I was not sure about this one . But when it came time to build everything else was out of stock . Well I'm glad they were because this kit is great buy had no problem with build and a great price thank you ATI"
5.0 5
"When I saw this build kit, I immediately ordered it. It shipped the next day and I got it in three days. When I opened it, the barrel was stamped .223. Its hard to find a reasonable priced AR-15 kit and this one was worth it. I can't afford all those fancy AR-15's from other places. Its simply put on some sights and lower and its ready to go. I bought a 80% lower and the parts kit doesn't come with a trigger guard. The 80% already has a trigger guard built into it, so another bonus. I love cheaperthandirt.com and ALWAYS come here first when I need something. Two thumbs way up!!!!!"
5.0 5
"Everything went together nicely. Came complete with 3 fired shells hanging from upper. No complaints here, might order another just to have. Great price."
5.0 5
"Appears to be well built. All the parts fit as they should. Great value!"
4.0 5
"this kit is a bargain functions great. finish is a little rough machine marks in barrel."
3.0 5
"Was excited about this kit. When I went to assemble it I was disappointed in a couple of things: the milling on the bottom of the upper where it meets the lower right by the rear takedown pin was bad. I had to remove about .025\" of material with a file to get it to fit. I tried it on two lowers to make sure the problem was with the upper. Same result. There was a visible section of material that was missed by the mill. The extra material was keeping it from seating. The ejection port milling was bad so bad that the cover wouldn't snap shut and if you did manage to force it shut the BCG wouldn't move into battery because the cover wouldn't snap open. Had to take a Dremel to that. Haven't fired it yet but wasn't impressed with the quality of the machining/finish. Also the buffer tube threads were really rough and didn't thread smoothly into the receiver. Sometimes you get what you pay for."