Seekins Precision's SP15 Forged Lower is precisely machined to better than MIL-SPEC tolerance while mating with any other MIL-SPEC part.
- CNC machined from 7075 T6 Mil-Spec forging
- Type III Class 2 hardcoat anodized finish
- Accepts standard AR15 lower receiver components and triggers
Big Book Catalog, Issue:67, Page:007
7075 T6 aluminum forging. Matte black Type III class 2 hardcoat anodized finish. .154” Trigger/Hammer pin holes. .250” takedown/pivot pin holes. Fits standard AR15 upper receivers and parts.