The F-1 Firearms UDR-15 Style 2 Universal Upper Receiver has skeletonizing and a scalloped MIL-SPEC 1913 Picatinny rail. This receiver is made with 7075-T6 aircraft quality domestic aluminum, ensuring quality while the new F-1 Firearms skeletonizing reduces weight yet enhances aesthetics.
- Manufactured from high-grade 7075-T6 billet aluminum
- Unnecessary surfaces milled out for lightest reliable configuration
- Scalloped top MIL-SPEC Picatinny rail
- Black - Type III Class 2 hard anodizing
- F-1 Firearms 100% Product Guarantee