12-26-2011, 05:04 PM
The system uses a rifle length gas system. The timing for the unlock is near perfect but the pressure dwell at the port is at a minimum, ie there is not a lot of margin for error.
We did test fire the upper with a variety of rounds including Wolf, Hornady and AA. The test lower for this would be a standard A2 with full stock and rifle buffer. Function was 100% but the feed was erratic due to a burr on the feed ramps. Hold open was checked as this was mentioned. All rifles are tested in a fixture that has a gas spring retardation.
Do not start cutting springs. There are two components to the correct operation of this weapon the preload value and the compression rate. move either out of the correct range and you can damage the weapon.
We did test fire the upper with a variety of rounds including Wolf, Hornady and AA. The test lower for this would be a standard A2 with full stock and rifle buffer. Function was 100% but the feed was erratic due to a burr on the feed ramps. Hold open was checked as this was mentioned. All rifles are tested in a fixture that has a gas spring retardation.
Do not start cutting springs. There are two components to the correct operation of this weapon the preload value and the compression rate. move either out of the correct range and you can damage the weapon.