SLR-B15 .458cal Billet Upper Receiver
- Machined in house from 7075 Billet
- Receiver ejection port modified for .458 case length
- Drilled for SLR ZRO HG dowel pin
- Works on all AR15 type lowers
- Relief for Geissele HG locating set screws (2023)
- Black Type 3 Mil-Spec Hard Coat Anodize
- Includes door assembly
- 7.6oz
