AR-15 Upper Assembly - .300 AAC Blackout (16" Parkerized Barrel & 13.5" M-Lok Handguard, 1:8 Twist)

$469.99
$399.99
SKU:
3001618(B)-MLOK(135)

Description

Looking for an easy way to make your AR-15 shoot the popular .300 AAC Blackout round instead of its standard 5.56mm round? Get this upper assembly! Chambered in .300BLK, this bad boy makes it easy to swap back and forth from 5.56mm to .300BLK in only a few seconds. Pull the takedown and pivot pins and simply swap your old upper assembly with this one. That's really it!

This complete upper assembly comes to you prebuilt with a 16" parkerized barrel coupled with a 13.5" M-Lok handguard. All you have to do is add either the backup sights or optic of your choice. Hell, your current 5.56mm mags will even work with the .300BLK rounds.

AR 15 RIFLE KIT SPECS:

Gas System: Pistol-length
Barrel Profile: M4
Barrel Steel: 416R
Barrel Finish: Parkerization
Chrome Lining: No
Muzzle Thread: 5/8×24
Chamber: .300BLK
Twist Rate: 1:8
Barrel Extension: M4
Gas Block Size: .750″
Gas Block Type: Low-profile
Muzzle Device: A2 Flash hider
Receiver Material: Forged 7075 T6
Receiver Type: M4
Handguard Type: 13.5″ lightweight M-Lok free float
Bolt Carrier Group Included: Yes
Bolt Steel: 9310 steel, magnetic particle inspected
Bolt Carrier Profile: Full-auto
Charging Handle Included: Yes
Overall Length: 24.5″

Benefits of the 16” Pistol-Length Parkerized AR 15 Upper Assembly:

  • 100% legal to own and ship to your front door
  • Not considered a firearm – no FFL paperwork needed!
  • 4140 steel barrel and Freedom parts kit ensure sub-MOA accuracy
  • Prebuilt upper with gas system removes the guesswork of rifle making
No FFL required  Made in the USA  Lifetime Warranty

Shipping Restrictions

AR-15Lowerreceivers.com only ships within the United States. Federal legislation dictates we cannot ship our products internationally. Shipping of various parts and/or accessories are prohibited to states and locales (ie New Jersey, California, New York, etc…) with restrictions against certain parts and/or accessories (i.e. states with high-capacity magazine restrictions, manufacturing of semi-automatic weapons, etc..). It is your responsibility to be aware of your local firearms laws before purchasing from our website. We try our best to keep our shipping page current, but laws change daily.

We are a national retailer of individual components and not all products depicted on this website are legal in every state. Shipping of various products found on this website are prohibited to some states (such as California, Connecticut, District of Columbia, New Jersey, New York, Rhode Island, and Washington). The information, pictures, text or products presented on this website are not a representation by us, and should not be understood by you, that any product or completed firearm is legal to assemble or own in your state of residence. We encourage each and every builder to perform their own research about the state and federal laws that apply to them. It is your responsibility to understand the law and we encourage you to consult with an attorney or your local ATF representative.