#GasPiston

Here is something a little different, an Air Rifle by SIG Sauer. When Pete first offered up a SIG Sauer Air Rifle for review I thought he was talking about the SIG MPX. I had one and while it is a fun toy, it is not really that great. Pete then told me it was for their APS20 with integrated suppressor. I was genuinely curious how good this $640 air rifle could be.

KNS Precision has a different approach in making the AK gas system adjustable. The most frequently seen way is to design an adjustable gas block. What makes the KNS Precision solution different is that they have incorporated the gas system adjustability into the gas piston design!

The Flint River Armory CSA45 is a side-charging carbine chambered in .45ACP that operates on a gas piston system and uses standard AR15 fire control parts. My expectations for this gun were admittedly low – another AR carbine in a caliber I don’t buy/shoot, made by a relatively unknown manufacturer is a recipe for disappointment. However, I was pleasantly surprised at how much I enjoyed shooting the CSA45. Let’s take a look.

A couple of months ago Adams Arms has introduced their P Series Micro Gas Block which you can read about by clicking here. Recently, they have also announced the availability of the adjustable version of that gas block called P Series Adjustable Micro Gas Block.

Do piston guns handle heat better than DI guns? If so, why? If not what shortcomings do they have? The video from the popular YouTube channel IraqVeteran8888 embedded below doesn’t quite answer these questions, but it’s still very interesting:

Ares’ GXR kit has been around for ten years now, giving gun owners a competitively-priced and simple way to convert their AR15/M4 carbines. Now they’re releasing an updated version of the popular kit which they say offers even better performance to gun owners than the original. Ten years ago the GXR kit was first used and praised not only by the general public but by service members in Afghanistan, proving its ability to function in a hot, sandy climes. Ares has been in business for nearly two decades and has stated they believe equally in the importance of safety, quality, and performance.

It has been a little while since our last installment of A Short (Stroke) History, but in this article I intend to wrap up my coverage of tappet-operated rifles by cataloging most of the post-war developments of this mechanism.