Fits 30mm scope tubes. AFFORDABLE MADE IN USA QUALITY The Warne Vapor line of mounts were developed and engineered to provide you with a strong and economical mounting solution that outperforms other mounts in their class. The 20MOA scope mount gives a scope an extra 20MOA of adjustment for long-range shots. 

Scope Mount fits: AR-15 M-4 SR-25 LR308 PTR-91 and any other MSR with a Picatinny rail that is at least 2.75 inches long

• Time-tested designs
• Easy to install
• Field proven performance
• Lightweight aluminum
• Lifetime warranty