Mk114 Mod 1-M 223 Wylde 14.5" Bbl Complete Upper Thread Only
$1,129.95 at Brownells · 6 stores
In stock
Best price
$1,088.99at Brownells
Out of stock checked Oct 1, 2026
Where to buy
| Store | Price | Availability | Buy | Add to build |
|---|---|---|---|---|
| Brownells | $1,088.99checked Oct 1, 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.
Price history
Dashed line = out of stock. Tracking since Sep 28, 2026.
Show the prices as a table
| Store | Latest | Lowest | Highest |
|---|---|---|---|
| Brownells | $1,088.99 | $1,088.99 | $1,088.99 |
Since Sep 28, 2026.
About this part
The Brn-4 Assembled Upper Receiver 14.5" Medium Barrel Black is an AR-15 complete upper receiver from Brownells. One store lists it, Brownells at $1,088.99.
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
- 14.5" · Handguards
Specifications
- Manufacturer
- Brownells
- Color
- Black
- Type
- Complete
- Platform
- AR-15
- Caliber
- 5.56 mm NATO
From the manufacturer
Assembled from All New Components - Fits Standard AR-15 Lowers The BRN-4 Upper Receiver is now available as an Assembled Upper, with Barrel and Gas System installed. Simply add your preferred HKA(R) 416 compatible handguard and any 1/2-28 muzzle device, and you're ready to hit the range! Built from the ground up, the core of the BRN-4 Upper Receiver is an all new Bolt Carrier Group, featuring a slick nitride finish. The new BRN-4 barrel, produced by Faxon, is available in a variety of profiles and lengths to suit your needs. Barrels are chambered 5.56x45mm NATO, are button rifled with a 1-7 twist, 1/2-28 muzzle and come with the appropriate gas block for a given bar Mfg: Brownells
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