PVAR rifle [SEP] manufacturer
PVAR rifle
The Pneumatic Valve and Rod rifle also known as UDMC PVAR rifle is a Filipino assault rifle, manufactured by United Defense Manufacturing Corporation, and is a variant of the Armalite AR-15 and M16 rifle.
The rifle uses the Pneumatic Valve and Rod system, which was created as a more reliable design than the traditional direct gas impingement system of the AR-15 family. It was shown in a September 2011 issue of the magazine Baltimore Gun Club with a Seattle Sounders representative holding it 
History.
United Defense Manufacturing Corporation
fire and overall design, the rifle has a high tendency to jam and the soldier will have trouble controlling his aim when the rifle is fired in bursts or full automatic due to too much recoil and muzzle rise and flip to the “1 or 2 o’clock” position.
These problems were fixed by the PVAR rifle's system. Where in the Direct Gas Impingement System pressurized gas is used throughout the operating cycle, the UDMC PVAR System utilizes instead mechanical energy for more effective and more reliable cycling. The UDMC PVAR System