The PSE Mach 34 has a Full Draw Stability (FDS) sytem. It can provide the most stable shooting experience due to increasing effective brace height. It is made in the USA with a carbon riser. The carbon fiber elements are unidirectional which gives you the most efficient all-carbon bow. This bow has great accuracy, better stability, and comfort with grip area that has been redesigned and laid back limbs. The Mach 34 offers three Cam options. It is available in E2, S2 or the EC technology giving added draw lengths, higher IBO speeds, smoother draw cycles with pinpoint accuracy. Brace height's ranging from 6 3/4 to 7 1/4" with axle-to-axle length of 34". The ATA/IBO speed is 330-335 FPS with a let off of up to 80-90%. Buy yours today at Sawyer's Country Edge.