16″ 300 BLK Blackout Kit 10″ Quad Rail with 80% Lower
Original price was: $479.00.$399.95Current price is: $399.95.
A .300 Blackout rifle kit with a 10″ Quad Rail Picatinny handguard and a genuine AR-15 80% lower receiver included. 7075-T6 aluminum, black anodized, mil-spec BCG, 1×8 twist. Machining of the 80% lower is still required.
- Description
- Additional information
- Reviews (5)
- FAQ
This .300 Blackout Rifle Kit pairs a 10″ Quad Rail Picatinny handguard with a genuine AR-15 80% lower receiver machined from 7075-T6 aluminum. It’s the longer-handguard step up from our 7″ kit, still bundled with a lower so you’re closer to a finished build.
- Chamber – .300 AAC Blackout
- Twist – 1 x 8
- Barrel Thread – 5/8″ x 24
- Barrel Steel – Chrome Moly, Nitride Processed
- Gas System – Pistol-Length
- Gas Block – .750″ Gas Block
- Handguard – 10″ Quad Rail Picatinny Handguard
- Upper Receiver – M4 Flat-Top w/ Barrel Nut & Delta Ring Assembly
- Bolt Carrier Group – Mil-Spec BCG
- Charging Handle – Included
- Lower Receiver – 7075-T6 Aluminum, Black Anodized, AR-15 80% Lower Included
- Origin – Made in the USA
What’s Included: Assembled M4 flat-top upper, mil-spec BCG, charging handle, and a 7075-T6 black anodized AR-15 80% lower receiver. The 80% lower still requires machining to finish — jigs and tooling sold separately.
See more configurations in our .300 Blackout rifle build kits collection, and pick up a matching 80% lower receiver jig to finish the machining.
| Weight | 8 lbs |
|---|---|
| Brand | |
| Barrel Chamber | |
| Barrel Length | |
| Barrel Twist | |
| Barrel Thread | |
| Barrel Material | |
| Barrel Gas Block | |
| Caliber | |
| Handguard Length | |
| Platform | |
| Barrel Finish | |
| Barrel Gas System | |
| Color | |
| Accessory Attachment Style | Picatinny |
5 reviews for 16″ 300 BLK Blackout Kit 10″ Quad Rail with 80% Lower
Only logged in customers who have purchased this product may leave a review.
Does this kit include a lower receiver?
Yes, a 7075-T6 aluminum, black anodized AR-15 80% lower is included, though it still requires machining before it functions as a lower.
What handguard and gas system does it use?
A 10″ Quad Rail Picatinny handguard with a pistol-length gas system.
What twist rate is the barrel?
1×8 twist, chambered in .300 AAC Blackout.
Is the bolt carrier group and charging handle included?
Yes, a mil-spec BCG and charging handle are both installed.
Do I need a jig to finish the lower?
Yes, you will need an 80% lower jig and the appropriate tooling to complete the machining.
Is this kit made in the USA?
Yes, the kit is assembled in the USA.
Hi g –
Good nice
Raul galvan –
You guys have a good prices
Randall D. PETTIE –
It’s a great kit to build as a display or hunting very accurate and a great rifle.
Alex Roberts –
Good stuff
John (verified owner) –
I bought this kit almost a year ago, the kit was missing the pistol grip, otherwise it seemed to be pretty good, I finished out the lower receiver on my mill. I did have an issue that occasionally the rounds would not fire and the primer strikes were rather shallow, also the front edge of the buffer was getting beat up by the buffer retainer pin, the bolt wasn’t going completely into battery. I found on a few different websites that this is a fairly common issue with some lower receivers, the solution was to order an offset buffer retainer pin. I ordered an offset pin and installed and the issues are much better, but I still have the light strikes on the primers occasionally along with the occasional misfire, I just replaced the buffer supplied with a standard carbine H2 buffer that is a bit heavier buffer but have not been out to test it yet..you know lack of ammunition! I do have ammunition that I reload but I want to make sure it runs flawlessly with factory ammo before I can say it is my reloads are causing the issue, I have been reloading for almost 50 yrs and haven’t had misfire issues in many many years. Only thorough testing will tell!