ARAK-21 5.56 NATO Complete Upper Receiver 16" Medium Bbl BLK
$919.08 at Kentucky Gun Co · 5 stores
In stock
Ascent 5.56x45 NATO 10.5" Complete Upper Receiver Black
Faxon Firearms · Upper Receiver
No ratings yetBest price
$529.00at Brownells
Out of stock checked Oct 24, 2026
In stock now instead
- ARAK-21 5.56 NATO Complete Upper Receiver 16" Medium Bbl BLK $919.08at Kentucky Gun Co
- Rock River Arms Completed Upper Receiver Elite Carbine A4 .223/… $527.00at MidwayUSA
- Spikes Tactical .223 Rem/5.56 16" Barrel Complete Upper Assembl… $567.00at OpticsPlanet
Where to buy
| Store | Price | Availability | Buy | Add to build |
|---|---|---|---|---|
| Brownells | $529.00checked Oct 24, 2026 | Out of stock | Buy at Brownells |
Prices and availability change often, so confirm on the store's site before you buy. We may earn a commission from these links.
Similar upper receivers in stock
This part is out of stock at every store we track. These similar upper receivers are in stock, with today's prices.
Rock River Arms Completed Upper Receiver Elite Carbine A4 .223/5.56mm 16 Inch Barrel 1-9 Twist Mid-Length Profile 1/2-28 Thread A2 Flash Hider Black
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Spikes Tactical .223 Rem/5.56 16" Barrel Complete Upper Assembly, Mil-Spec Phosphate Coated, Black M4
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Aero Precision M4E1 Threaded Complete Upper Receiver 5.56 16in Mid-Length Barrel 1-7 Twist 15in ATLAS R-ONE Handguard A2 Flash Hider Cerakote OD Green
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Price history
Dashed line = out of stock. Tracking since Sep 28, 2026.
Show the prices as a table
| Store | Latest | Lowest | Highest |
|---|---|---|---|
| Brownells | $529.00 | $529.00 | $529.00 |
Since Sep 28, 2026.
About this part
The Ascent 5.56x45 NATO 10.5" Complete Upper Receiver Black is an AR-15 complete upper receiver from Faxon Firearms. One store lists it, Brownells at $529.00.
Fits and works with
- Caliber
- 5.56 / .223 · Shop matching ammo
- Bolt
- Standard AR-15 (5.56 / 300 BLK / .350 Legend) · Bolt carrier groups
- Barrel length
- 10.5" · Handguards
Specifications
- Manufacturer
- Faxon Firearms
- Color
- Black
- Type
- Complete
- Platform
- AR-15
- Caliber
- 5.56 mm NATO
From the manufacturer
Faxon Firearms set out to create a dependable and affordable 5.56 upper receiver group that will be a drop-in fit to complete your newest AR-15 build, or as a replacement or spare upper for the firearm you already own. The Faxon Ascent Complete 5.56 Upper Receiver Group features a 10.5" or 16" 5.56 Gov/Socom profile barrel, superfinished full-mass 5.56 Bolt Carrier Group, Enhanced Forged Upper Receiver, and a 9" or 13" Aluminum handguard. The Faxon Ascent Complete 5.56 Upper Receiver Group is compatible with all mil-spec AR-15 lower receivers and parts. The Faxon Ascent Complete 5.56 Upper Receiver Group is backed by Faxon's Lifetime Guarantee. Features Mfg: Faxon Firearms
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