Long-Stroke Piston System Cutaway in Ultra Slow Motion

A standard AR-15 uses a direct impingement system. While there are many benefits to such a system, does have drawbacks. A gas piston system is a different method to cycle a firearm that has its own set of advantages and disadvantages. So let’s “ooh” and “ahh” at ultra slow motion footage of Primary Weapon Systems’ long stroke piston system.

A standard AR-15 uses a direct impingement system. While there are many benefits to such a system, does have drawbacks. A gas piston system is a different method to cycle a firearm that has its own set of advantages and disadvantages. The direct impingement vs gas piston debate is a very heated one, and is an argument we will save for a later date.

In the meantime, let’s “ooh” and “ahh” at ultra slow motion footage of Primary Weapon Systems’ long stroke piston system.

While Primary Weapon Systems is not the first company to come out with a piston driven AR, it certainly has made a very nice one. Be sure to take a look at the Primary Weapons MK1 MOD 2.

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Brian Purkiss
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Brian Purkiss is a firearms instructor, competitive shooter, proponent for individual liberty and Second Amendment rights, and a web developer. He enjoys competing in and organizing Run and Gun Competitions, as well as shooting in USPSA, Outlaw matches, and 3 Gun.