SPIKE’S 556NATO UPPER 16″ CHF/FSP
$544.67
The Spike’s Tactical 556 NATO Upper features a robust 16″ FN hammer-forged barrel with a 1:7 twist, designed for precision and reliability in both tactical and competitive settings. This complete upper receiver is compatible with AR rifles and includes a mid-length gas system and front sight post, making it an excellent choice for shooters looking for enhanced performance and versatility in 5.56 NATO. Ideal for home defense or range use, this upper delivers dependable accuracy and durability.
Out of stock
Spike’s Tactical Complete Upper Receiver, 223 Remington/5.56 NATO, 16″ FN Hammer Forged Barrel, 1:7 Twist, Fits AR Rifles, Mid-length Gas System, Front Sight Post, Black Finish STU5435-MLS
| Weight | 4.313 lbs |
|---|---|
| Dimensions | 25.000 × 4.500 × 2.500 in |
| Manufacturer | Spike’s Tactical |
PROCESSING & SHIPPING
Orders typically ship within 1–3 business days (Monday–Friday) after payment and all required documentation are received. Time to arrival after shipment depends on the carrier. Shipping method is at BT Gun Company’s discretion; ammunition and oversized accessories are charged at actual shipping cost. We do not ship to Hawaii or Alaska.
FIREARM TRANSFERS
- Firearms must ship to a licensed FFL dealer of your choosing — confirm with them first that they can accept the transfer.
- Your receiving FFL will need to email their license to [email protected] before we can ship.
- Inspect your firearm at your FFL’s location before signing ATF Form 4473 — once signed, the firearm is considered accepted.
You’re responsible for knowing the firearms laws in your state before ordering. For complete shipping, returns, and restocking-fee policy details, see our Shipping & Returns page.

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