When looking for an integrally suppressed AR, there is only one true option to choose. The Zulu is literally designed around the 5.56 NATO cartridge and is optimized for the AR15 platform. We made the decision to build the silencer into the upper as an integral part of the rifle to see just how good we could get the build.
We made several design decisions that we felt incorporated the gas impingement design. Things like putting the gas block inside the silencer module to capture the gas that leaks out of the gas block in the areas when it meets the gas tube and barrel. This done another thing, we were able to extend the back of the silencer module past the gas block which allows for a significant amount of volume to be added to the blast chamber. This added volume allows us to lower the initial blast pressure dramatically before entering he subsequent baffle chambers. This lowers overall tone and reduced gas spitting to some degree.
Another innovative feature of the Zulu integrally suppressed AR upper receiver assembly is the peripherally ported front cap. This allows pressure to bleed off at a controlled pace to further lower internal pressure and to also reduce back pressure even more.
The next trick we employed was the use of all that titanium in the construction of the suppressor module. We figured that this would do several things at once for our idea of the perfect integrally suppressed AR upper assembly. The first thing is the most obvious though in that it makes the fact that there is a silencer on the rifle not even noticed, it is incredibly lightweight and points very easily. The next thing that the titanium does is to help with heat dissipation where it will lot hold the heat very well, there by reducing the amount of stored heat from shot to shot a lot less than what we would have had with stainless steel. Dont get me wrong, this girl can get feisty! But with just a short period of time to cool, it can have decent manners much faster than if we have used other metals.
So until next time, keep your powder dry!