The UDR-15 upper is manufactured from billet 7075-T6511 aluminum to ensure rigidity while showing off our patented skeletonized technology. This design greatly reduces weight and mitigates gas blowback to the shooter's face in suppressed applications. Available in either out Style 1, Style 2, or Style 2 left ejecting upper and is compatible to most MIL-SPEC lowers on the market. All three uppers are universal and are held to strict machining tolerances. The Style 1 upper maintains narrow skeletonized window cuts and the Style 2 right and left ejecting upper have larger cuts, as well as a larger ejection port capable of discharging casings from cartridges up to .458 / .50 caliber. All individual uppers are finished in black anodized.
UDR Style 1 Information:
- UDR-15 Style 1 universal upper receiver
- Manufactured from high grade 7075-T6 billet aluminum
- Unnecessary surfaces milled out for lightest reliable configuration
F-1 Firearms offers a 100% product guarantee against any manufacturing defects on F-1 Firearms manufactured products and accessories to ensure complete customer satisfaction.