The EVOLUTION 40 is a high-performance sound and flash suppressor designed for use on .40 S&W caliber semi-automatic handguns. As with all members of the EVOLUTION family the EVOLUTION 40 stands head and shoulders above the "competition" because it incorporates the A.S.A.P. System. Essentially a "product-perfected" Nielsen device the A.S.A.P. System enables traditionally recalcitrant Browning inspired handgun designs to function reliably by temporarily relieving the host firearm of the weight-burden of the suppressor. When an EVOLUTION 40 equipped weapon is discharged high-pressure gasses enter the suppressor body and propel it forward against the tension of the A.S.A.P. System driving spring. While the majority of the suppressor's mass is in this "floating" condition the host weapon's firing cycle is able to proceed unhampered. The driving spring within the A.S.A.P. System returns the suppressor to it's unfired state ready for subsequent shots. This sequence of events takes place so quickly the shooter is unaware it has occurred. This Class 3 item is new and covered by Dury's Lifetime Warranty.

 
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