Some criticisms were made to these M1 Abrams purchases, some analysts expressed that Taiwan's terrain and some of its bridges and roads are unsuitable for the 60-tonne M1A2. However, Taiwan's current tanks have obsolete 105-millimeter guns that may not be able to penetrate the frontal armor of modern People’s Liberation Army (PLA) Type 96 and Type 99 tanks, which can easily penetrate the Patton’s old-fashioned steel armor with their modern 125-millimeter guns. The M1A2T tank's 120-millimeter gun is capable of destroying PLA tanks without reliance on anti-tank missiles. Moreover, tanks can be used as mobile reserves for counterattacks against PLA beach landings, which was successful during Battle of Guningtou.