BN 80% 6" 300 BLK AR-15 Pistol Build Kit - $300 ^

$300 Bare Necessities Builder's Grade Complete AR-15 Rifle Build Kit

Start your AR-15 build with the $300 Bare Necessities Builder’s Grade Complete AR-15 Rifle Build Kit, featuring a black anodized 80% lower receiver with pre-engraved Fire / Safe markings. This kit includes a complete 6” upper receiver, a Mil-Spec M4 stock kit, and a complete lower parts kit (LPK), providing high-quality components for those assembling their own rifle. The **80% lower receiver is not a firearm** and requires additional machining to be functional. Check your local and state laws before purchasing.

Builder's Grade Complete 6" 300 BLK Upper Receiver - Black | A2 | 5.5" Slant Cut M-LOK | With BCG & CH

**This Complete Upper Receiver Ships FULLY ASSEMBLED**
This Complete 6 inch M-LOK upper receiver comes with a 5.5 inch free float handguard that has a slant cut design and is built with only the best Mil-Spec components. The heart of this upper is comprised of a 4150 barrel and our black nitride bolt carrier group that is finished with an incredible polish, making the action smooth and easy to keep clean.

Black Anodized 80% Lower Receiver with Fire / Safe Safety Markings

• Forged 7075-T6 aluminum, precision-machined for a high-strength foundation.
• Black anodized finish with pre-engraved Fire / Safe safety markings.
• Mil-Spec compatible design for seamless component compatibility.
• Unfinished (requires additional milling and machining to be made functional).

Tactical Sport 6-Position M4 Stock Kit

• Impact-resistant polymer construction with Mil-Spec diameter extension tube made from aircraft-grade aluminum.
• Complete assembly includes action spring, buffer assembly, tear-drop ring, and castle nut.

Bare Necessities Complete AR-15 Lower Parts Kit (LPK)

• Includes all necessary components to complete your lower receiver, ensuring proper fit and function.

Custom Engraving Available for 80% Lower Receiver

RTB now offers anodized 80% lower receivers pre-engraved with your choice of serial number and manufacturer information. We engrave to a depth of .01" and provide the following customizable fields:

• Name of Person or Entity: (Personal name, trust name, etc.)
• City & State
• Model: (Customizable with a default prefix of "MOD:")
• Caliber: (Default is "MULTI" but can be customized, prefix is "CAL:")
• Serial Number: (Must be unique; default prefix is "S/N:")

Note: If you do not want the default prefixes engraved, please specify in the "Order Comments" section at checkout.

Legal Disclaimer: This 80% lower receiver is not considered a firearm and does not require an FFL for purchase. However, additional machining is required to make it functional. Ensure compliance with federal, state, and local laws before completing your build.