SR-15 KS-3 5.56 NATO 11.5" Bbl Assembled Upper Rcvr Black

Name: SR-15 KS-3 5.56 NATO 11.5" Bbl Assembled Upper Rcvr Black
Brand: Knights Armament
Availability: OutOfStock

Knights Armament · Upper Receiver

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Best price

$1,710.00at Brownells

Out of stock checked Oct 1, 2026

Buy at Brownells

Where to buy

Store	Price	Availability	Buy	Add to build
Brownells	$1,710.00checked 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

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Dashed line = out of stock. Tracking since Sep 28, 2026.

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Store	Latest	Lowest	Highest
Brownells	$1,710.00	$1,710.00	$1,710.00

Since Sep 28, 2026.

About this part

The SR-15 KS-3 5.56 NATO 11.5" Bbl Assembled Upper Rcvr Black is an AR-15 complete upper receiver from Knights Armament. One store lists it, Brownells at $1,710.00.

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: 11.5" · Handguards

Specifications

Manufacturer: Knights Armament
Color: Black
Type: Complete
Platform: AR-15
Caliber: 5.56 mm NATO

From the manufacturer

KNIGHT'S ARMAMENT SR-15 KS-3 5.56 NATO ASSEMBLED UPPER RECEIVER The KS-3 features a standard profile 11.5" cold hammer forged barrel, with an optimal length for those that need a small rifle-caliber carbine. It is easy to stow for transport, unobtrusive to carry, and highly efficient in use. With nearly 100% compatibility with the other KS rifles, it is the recommended choice for a secondary upper receiver for those with KS-1 or KS-2 rifles, or as a primary system for those that require a dependable, small, light carbine. SPECS Barrel: 11.5", cold hammer forged, 1:7" twist, chrome lined Cartridge: 5.56 NATO Mfg: Knights Armament