Stag 15 .300 Blackout 16 in Rifle Kit

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Want the thump of a 300 Blackout without the waiting period of an SBR? The Stag 15 300 Blackout Rifle kit is your answer featuring a 16 inch barrel to avoid the extra paperwork and wait times. Simply add a mil spec lower receiver to this kit and you will have everything you need to build your own high quality, 300 Blackout Stag 15 Rifle. All parts are made to mil-spec standards or better.

Each Stag Arms Rifle Kit comes with a magazine and our Infinite Shot Barrel Guarantee.


Action: Semi-Auto Direct Impingement

Caliber: 300 BLK

Twist Rate: 1/7 Button Rifled

Muzzle Device: 30 Caliber A2 Style Flash Hider

Barrel: 16", CMV, Black Nitride Coated (QPQ)

Handguard: 13.5” Stag SL M-LOK free-float

Receiver Material: Forged and Mil-Spec 7075 T6 Aluminum with Type 3 Hard Coat Anodizing

Bolt Carrier: Mil-Spec M16 BCG, Black Nitride Coated

Gas System: Pistol Length with Low Profile Gas Block

Charging Handle: Standard Mil-Spec

Buttstock: Magpul MOE SL Carbine Stock

Buffer: Heavy Carbine Buffer and Spring

Grip: MOE Grip

Magazine: 30rd

Safety Selector: Right or Left Hand

SKU: STAG15302000

*Product images are for illustrative purposes only and may differ from the actual product.


Q: What is the warranty coverage?

A: This rifle kit has a one year warranty. The barrel has our Infinite Shot Barrel Guarantee.

Q: Is this compatible with other manufacturer's lower receivers?

A: As long as the lower accepts a mil-spec upper, all of our kits will function properly.