The Odin Works OTR-15 billet AR-15 receiver set (brand part no. OTR-15-RECEIVER-SET-RG) gives builders a matched upper and lower machined together from the same billet block, so tolerances line up cleanly without the fitment gaps that can plague mixed-brand builds. Odin Works cuts both halves from 7075 aluminum with a style-forward profile that stands apart from mil-spec forged parts, and the Ranger Green finish gives a build a distinct look beyond the usual black or FDE options. This set is a strong starting chassis for a range gun, competition build, or any AR-15 project where the builder wants a cohesive, purpose-built receiver pairing rather than assembling mismatched halves. Among the parts and sets in the AR15 lowers category, the OTR-15 stands out for its deliberate billet styling.

Key Specifications

• This set includes a matched billet upper and lower receiver machined together for consistent fitment.
• Both halves are cut from 7075 aluminum for a strong, precisely machined chassis.
• The finish is a distinctive Ranger Green, a departure from standard black or FDE Cerakote.
• The billet upper has no forward assist, a deliberate design choice for a cleaner profile.
• A low-profile brass deflector is machined into the upper for a streamlined look.
• The set is built for semi-automatic AR-15 builds.
• It accepts multi-caliber AR-15 configurations, giving builders flexibility in barrel and bolt choice.
• Finished with a hard-coat anodized surface for wear resistance.
• Lower includes an integrated trigger guard machined as part of the receiver.

Frequently Asked Questions

Does this set include both the upper and lower receiver? Yes, it is a matched billet upper/lower receiver set machined together.

Does the upper have a forward assist? No, this billet upper omits the forward assist for a cleaner profile.

What caliber is this receiver set compatible with? It is multi-caliber compatible, so it works with standard AR-15 barrel and bolt combinations.

Buy the Odin Works OTR-15 Billet Receiver Set, Ranger Green

A matched billet upper and lower in a standout Ranger Green finish gives a build both consistent fitment and a distinct look. Order it from our Lubbock, Texas gun shop for fast, insured shipping to your FFL.