Guntec USA Stripped Billet Upper Receiver .308 Gen 2 Anodized Red. The aircraft quality aluminum features MIL-SPEC hard coat anodized finish. This stripped upper receiver will accept standard AR10/MIL-SPEC parts. Once in place the adjustable gas block/carbine length buffer keeps the .308 chambering secure so rounds stay out longer damaging the upper receiver if caught or snagged when you rack the bolt. The square style sling swivel studs keep the receiver on your AR at the correct angle for a clean look with maximum flexibility. Once you receive your GUNTEC .308 Stripped Upper Receiver make sure to grab our exclusive five year guarantee while it's still in the package Specifications for Guntec USA .308 Stripped Billet Upper Receiver Gen 2: Manufacturer: Guntec USA Color: Red Caliber: .308 Winchester Gun Model: AR-10 Condition: New Projectile Caliber: .308 Caliber Package Contents: Guntec USA .308 Stripped Billet Upper Receiver Gen 2 What firearm models does the manufacturer say Guntec USA .308 Stripped Billet Upper Receiver Gen 2 is compatible with? The manufacturer says that Guntec USA .308 Stripped Billet Upper Receiver Gen 2 is compatible with AR-10Guntec USA GT-UPPER-308-G2-RED: Stripped Billet Upper Receiver .308 Gen 2 Anodized Red