Advanced Structures Technology (AST ) focuses on bringing together the right materials to the exact places using perfect processes in bow manufacturing. The result is a lighter, stiffer, more precisely made bow. American-made carbon rods are of the lightest, strongest, most consistent forms of carbon. Using these allow us to increase stiffness by 47.5% while decreasing overall weight by nearly half a pound. The FORM is the lightest, stiffest bow on the market that doesn t compromise on precision and accuracy. Product Specifications Model: Prime FORM Axle-to-Axle: 34 inches Brace Height: 6-1/4 inches Let-Off: 75% - 85% IBO Speed: 334 FPS (or 336 FPS in some sources) Mass Weight: 4.1 lbs Draw Length: 26.5 30.5 in adjustments Max Draw Weight: 70 lbs Cam/Mod: Core Cam System Dexterity: Right Hand (RH) Riser Color: Recon Grey Limb Color: Recon Grey