If there is anything in your cart, it will not be brought over to the old site.

Celebrate Veteran's Day W/ $25 Off $250+ Orders W/ Code: SOWW25

Celebrate Veteran's Day W/ $25 Off $250+ Orders W/ Code: SOWW25

KAK INDUSTRY LLC. K-SPEC 5.56X45MM NATO COMPLETE UPPER RECEIVER

Barrel Length

16.00

K-SPEC 5.56 NATO 16" BBL 1-7 Twist Complete Upper Black

Brownells #

430110224

MFR #

450-1010-059-A-B

UPC

811163035545

$599.99

Purchase Limit

In stock

NOTIFY ME WHEN IT'S BACK IN STOCK

Can we ship this to you? (US only)

How To Buy Guns Online

International purchase information

Specifications

Cartridge:

5.56x45 NATO

Attachment Type:

M-LOK

Barrel Contour:

Government

Color:

Matte Black

Finish:

Anodized

Item Length (Inches):

24.000

Barrel Length:

16.00

Item Height (Inches):

2.390

Gas Block Diameter:

0.750 Inches

Gas System Length:

Mid-Length

Item Width (Inches):

2.868

Muzzle Threads:

1/2"x28

Quantity:

Material:

Aluminum

Make Model Fit:

AR-15.Universal

Twist:

1-7

Receiver Style:

Complete

Restriction

Restricted Part:

Yes

Can we ship this to you? (US only)

How To Buy Guns Online

International purchase information

Description

Brownells and KAK Industry have partnered to build the best performing complete upper at an unbeatable price. This premium complete upper features a chrome-lined barrel, chrome-lined phosphate K-SPEC Enhanced BCG, Brownells-exclusive PentaComp muzzle device, and a rock-steady free-float KAK Industry MLOK handguard. 100% American made for years of dependable service.

The K-SPEC Down Vent BCG represents unrivaled reliability, featuring Slotted Angled Carrier Rails, Dual Ejectors, and downward gas vents that redirect gas underneath the carrier instead of out at the shooter’s face. For suppressed shooting with a traditional baffle can, the K-SPEC down vent BCG is a game-changer.

This complete upper features:

Forged 7075 T6 Upper Receiver
Mid-Length gas system
1/2x28 muzzle threads with Brownells-exclusive PentaComp device
Chrome-lined phosphate K-SPEC Enhanced BCG
Large Billet Latch enhanced charging handle

SKU: 430110224

16” 4150 CrMoV chrome-lined barrel with 1:7” twist rate, twice stressed relieved

15” MLOK handguard with heavy-duty barrel nut

SKU: 430110225

13.9” 4150 CrMoV chrome-lined barrel with 1:7” twist rate, twice stressed relieved

13” MLOK handguard with heavy-duty barrel nut

SKU: 430110226

14.5” 4150 CrMoV chrome-lined barrel with 1:7” twist rate, twice stressed relieved

13” MLOK handguard with heavy-duty barrel nut

Each upper is test fired to ensure reliable function.

Restricted Part
Please check with your state regulations for ownership of Restricted Parts. May require documentation.

Please select a FFL Dealer

7 dealers near

No dealers found

Please search by another zipcode to find the nearest dealer.

Brownells Retail Store

You must select required check box

Note:

Listed hours & fees are not guaranteed and subject to change. Please contact the dealer to confirm current hours & fees.

* Must accept required fields.

Brownells Featured Dealers

Choosing a Brownells Featured Dealer is the fastest and easiest way to complete your purchase. Brownells Featured Dealers have agreed to perform FFL transfers on guns purchased online from Brownells. We have their necessary FFL information on file and your FFL order will ship directly to them once processed.
Standard Dealers

Standard Dealers have not yet agreed to perform FFL transfers on guns purchased online from Brownells. If you choose a Standard Dealer, you are responsible for contacting that dealer and arranging for the dealer to submit a signed copy of an FFL and to give Brownells permission to ship the gun.
Not Available Dealers

Not Available Dealers are dealers Brownells cannot ship guns to at this time. These dealers either do not meet our requirements for FFL transfers, or prefer to not perform transfers for guns purchased online from Brownells.

7 dealers near

View Suppressors	View AR-15 Parts
View 1911 Parts	View Parts for Glock
View Parts for Ruger 10/22	View Schematics

KAK INDUSTRY LLC. K-SPEC 5.56X45MM NATO COMPLETE UPPER RECEIVER

Add To Favorite

Pin in Brownells Featured Dealers

Pin in Standard Dealers

Pin in Not Available Dealers

Brownells Featured Dealers

Standard Dealers

Not Available Dealers