Hi Joel and welcome. The upper and lower receiver is forged 7075 T6 aluminum and is finished in a dark matte black. Cheers and stay safe!

DEL-TON LIMA FEATURES
Del-Ton has relased the newest edition to it`s AR pistol family. The Del-Ton Lima comes equipped with with an 11.5" barrel. The Lima Pistol length MLOK 10 inch free float rail keeps everything streamlined and accurate. The upper and lower reciever is forged 7075 T6 aluminum and is finished in a dark matte black. Weighing in at 5.5 lbs empty the pistol is highly maneuverable and ready for any mission.
DEL-TON LIMA SPECIFICATIONS
Manufacturer: Del-Ton
Model: Lima Pistol
Type: Semi-auto Pistol
Action: Semi-auto
Finish: Matte Black
Weight: 5.5 Lbs.
Caliber/gauge: 300BLK
Capacity: 30
# Of Mags: 1
Magazine Desc: 30 Rd. Steel Mag
Barrel: 11.5"
Sights: None
Addl Info: Mlok Rail
Addl Info: Dust Cover & Forward Assist
Addl Info: Threaded Bbl W/ A2 Flash Hider