I love the otis cable... wish we had them while I was in the military. Makes cleaning a breeze, especially when breaking in. You don't need to takedown the rifle, pull the BCG etc, to insert the cable and simply pull straight through between shots. This is the first time I got my eyelet caught... never seen it before so I assume it was a freak occurrence.
The beauty of the 300 AAC Blackout system is the rifle fires both subs and supers equally well WITHOUT the need to adjust the gas flow, so no adjustable gas block is needed, suppressed OR unsuppressed. :D
The research I did before I started on the project showed other shooters had various different results with the 300 AAC, most of them was the inability to cycle subsonic rounds when unsuppressed. Since that is the "most problematic" conditions for the rifle to shoot reliably, I set that as my goal in this build. I believe the magic is finding the right combination of gas tube length, barrel length, BCG, buffer weight, and buffer spring rate. Right now my formula is:
- 14.5" Barrel
- Pistol-length gas system
- 0.098" 0.075" gas port
- Cheapie BCG from PSA
- Std carbine spring
- Std weight buffer
I spent a lot of time to make sure everything was assembled correctly and smoothly before the first shots were taken. Seeing that the charge in the AAC is limited, especially on subs, I wanted to make sure there was minimal resistance in the action and maximize the energy from the gas return to cycle properly.
Upcoming Part Three: CNC'ing my own lower for the 300 AAC upper and maybe a suppressor while I'm at it.