16″ 300 AAC Stainless Steel Blackout Complete Rifle Kit No Lower
Original price was: $519.00.$339.95Current price is: $339.95.
A .300 Blackout upper kit built around a 416-R stainless steel barrel with a removable stainless A2 birdcage flash hider and a 12″ free-float slim Keymod rail. Mil-spec M16 BCG and charging handle installed. 1×8 twist, pistol-length gas. No lower receiver included — not an FFL item.
- Description
- Additional information
- Reviews (3)
- FAQ
This .300 Blackout Stainless Kit swaps the usual chrome moly barrel for 416-R stainless steel, paired with a 12″ free-float slim Keymod rail and a removable stainless A2 birdcage flash hider. The upper ships fully assembled and ready to drop onto your own stripped AR lower.
- Chamber – .300 AAC Blackout
- Twist – 1 x 8
- Barrel Thread – 5/8″ x 24
- Barrel Steel – 416-R Stainless Steel
- Flash Hider – Stainless Steel A2 Birdcage (Crush-Washer Mounted, Removable)
- Gas System – Pistol-Length, .750″ Low Profile Gas Block
- Handguard – 12″ Free Float Slim Keymod Rail
- Upper Receiver – M4 Flat-Top w/ Feed Ramps
- Bolt Carrier Group – Mil-Spec M16 BCG
- Charging Handle – Included
- Lower Parts Kit – Mil-Spec LPK
- Stock – US-Made 6-Position Black Stock w/ Buffer & Spring
- Origin – Made in the USA
What’s Included: Assembled M4 flat-top upper, stainless A2 flash hider, mil-spec BCG, charging handle, mil-spec lower parts kit, and 6-position stock. Lower receiver is NOT included — pair it with any AR-15 80% lower, and this kit ships as a non-FFL item.
Browse more options in our .300 Blackout rifle build kits collection, or pick up a matching 80% lower receiver to complete the build.
| Weight | 8 lbs |
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| Barrel Thread | |
| Barrel Material | |
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| Platform | |
| Accessory Attachment Style | Keymod |
3 reviews for 16″ 300 AAC Stainless Steel Blackout Complete Rifle Kit No Lower
Only logged in customers who have purchased this product may leave a review.
Does this kit include a lower receiver?
No. This kit ships without a lower receiver, so it is not an FFL item.
What makes this different from the standard chrome moly kits?
The barrel is machined from 416-R stainless steel rather than chrome moly, with a matching stainless A2 flash hider.
Is the flash hider permanently attached?
No, it is torqued on with a crush washer and can be removed.
What handguard does it use?
A 12″ free-float slim Keymod rail.
Is the bolt carrier group and charging handle included?
Yes, a mil-spec M16 BCG and charging handle are both installed.
Is this kit made in the USA?
Yes, the kit is assembled in the USA.
Anthony B –
Purchased this kit on sale for Christmas of 2017. Extremely happy with the build quality of the upper as well as the included parts kit. I used the Poly 80 lower and it works perfectly. Out of the box it shoots factory Remington 300 AAC UMC supersonic ammo at about 1.5-2.0 MOA. Very happy with the kit and price point!
neil t Lee (verified owner) –
Good communication, great product , high quality packed nice for shipping,went together perfectly
Chris Smith (verified owner) –
Great company and great product I would definitely recommend them and will purchase from them again