10.5" 556 NATO Parkerized M4 Barrel AR15 Upper Assembly with 10" Rail and A2 Flash Hider
The 556 NATO (5.56x45) chamber will reliably fire both 556/223 with the highest possible accuracy (223 Remington ammo can be used in 556 NATO barrels). Both rounds maintain supersonic speed beyond 500 yards and equal the accuracy of the benchmark M1 Carbine / M2 30-06 Springfield combination. The 556 NATO cartridge is designed as a lighter alternative to the 7.62x51 NATO that maintains the capability of penetrating 0.135" steel at 500 yards.
- 10.5" 556 NATO 4150 Chrome Moly M4 Contour Parkerized Barrel with 1x7 Twist and 1/2x28 Threads
- Mil-Spec Upper Receiver forged from 7075 T6 aluminum with forward assist and dust cover assembly installed. Hard coat anodized MIL-STD 8625 Type 3 Class 2
- 10" Narrow Profile Free Float Rail machined from 6061 T6 aluminum Very comfortable and very light weight. Your choice of M-LOK or KEYMOD attachment points along the entire length at 3, 6, and 9 positions. Hard coat anodized MIL-STD 8625 Type 3 Class 2
- 0.750" Low Profile Gas Block
- Carbine Length Gas System
- Mil-Spec A2 Flash Hider with crush washer
This upper assembly will fit all standard AR15 lower receivers.
This item is "Firearm Parts", not a complete firearm (no serialized components). It will be shipped directly to you with no FFL transfer required.
You are responsible for knowing federal, state and local laws applicable to this item. AR15Parts.com reserves the right to not ship to addresses where it may not be legal to own this item.
ReviewsScott JonesDave Cash
Great service and productNinja Tackle
Quality and customer Servicefrank torcasio
great productPurchased one of these a month or so ago and can't be more pleased with it. Dropped in on a Anderson pistol lower receiver and it functioned flawlessly. mounted a noveske flaming pig flash on it to keep my rangemates happy..Geoffrey Ferguson
Great UpperOrdered this upper on a Friday and I received it at my house on Monday. Unbelievably fast processing and shipping, you can not beat 3 day delivery (and over a weekend also). The upper is amazing. I am really impressed with how slim the forearm is. I love this upper and would recommend it to everyone.DD
10.5" 5.56 NATO AR 15 Pistol UpperSolid upper, well put together. Have found no issues and mated without issue to Anderson lower. Can't wait to take this one out.Matthew Haussmann
ReviewEmpty reviewTheodore Bettein
Fast and excellent service.You won’t regret buying from these guys.Keith Townsend
Great productCame super quickly. Looks great!Jeff McLawhorn
WowWow, what a great deal, could not buy the parts and put together for this price. Looks great. Looked on several web sights bust price around. looking to foreword shooting same.
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DetailsCurrent Stock: 122SKU: UA55N10PA07M428C_10ML00_A2UPC:Availability: Usually Ships in 24 HoursOld SKU: 105223SSPUG1MLQ