Our Short Stroke Gas System has
been another ongoing project since the fall of 2012. The original design was an attempt to solve
the issue of cutting off the forearm brackets of the PSL gas tube in order to install
the SVD Forearm Conversion, as seen in the earlier picture.
The gas tube in our design was
a .590" OD smooth bore cylinder with a .550" OD puck like in the Saiga-12,
which pushed a spring loaded .195" OD OP rod and cycled the modified bolt carrier with no piston on the front. The tube had adjustable gas ports to relive
pressure, similar to what the ridges do in a Kalashnikov gas tube.
The tube installed into the front gas block and locked into the rear sight block identical to a conventional gas tube. Because of the thin diameter of the tube, using it in combination with SVD forearms and forearm brackets allowed one to drop it in without making any modifications inside the SVD forearms for clearance.
Our BHA54s (see brochure) uses a modified SVD gas system with three adjustable gas settings, and after introducing this firearm we realized Izhmash had it right and there was no need to reinvent it, so our redesigned Short Stroke System's components are patterned after the SVD gas system with minor modifications.
We’re doing a separate post on
just the Short Stoke System so to not be redundant we won’t go into detail at
this time, but the following pictures show some of the items that are completed
in this redesign. The bolt carrier that
accompanies this systems and modified bolt carrier return spring are the only items yet to be completed.