Lantac SF Builder Set 12.5″ RL — Upper & Lower, Multi

Description

Lantac’s SF forged builder set pairs a forged upper and lower receiver with an M-LOK handguard in a 12.5″ RL configuration. The set is finished in anodized black and designed for multi-caliber AR-15 style builds. The lower receiver includes a spot face cut at the takedown area to ease rear pin removal, and the magwell is internally flared to aid quicker, more consistent magazine seating.

Key Specifications

• The brand is Lantac USA.
• The model is SF 15.
• The product is a Lower/Upper Set intended for AR-15 style builds.
• The finish is Anodized in a Black color.
• The action is listed as Semi-Auto.
• The caliber/gauge is identified as Multi.
• The handguard uses an M-LOK interface.
• The configuration includes a 12.5″ RL as indicated in the product name.
• The lower receiver has a spot face cut at the takedown area for easier rear pin removal.
• The magwell features an internal flare to assist with magazine seating.

Built for shooters assembling a reliable AR-15 platform, this Lantac SF set emphasizes durable forged construction and practical, builder-friendly details. Its anodized finish and M-LOK handguard provide a versatile foundation for customization, whether the priority is modularity for competition, range work, or a precision-oriented build.