Designed for steady, repeatable performance in varied environments, the LanTac USA LLC LANTAC SF FRGD BUILDER SET 13.5" RL emphasizes functional reliability and straightforward operation. This builder set is ideal for AR-15 enthusiasts seeking superior quality and performance, featuring a precision-forged upper and lower receiver with a durable anodized black finish for enhanced corrosion resistance. The 13.5-inch Spada M-LOK rail provides ample mounting space for accessories and an ergonomic grip, making it perfect for custom sporting long gun builds. LanTac USA LLC is renowned for high-quality firearm components and ongoing product development.