I bought a smith and wesson m&p full size about 6 months ago, and so far I have put over 2500 rounds through it. The shooting consisted of very rough cqb classes and psd refreshors. One day the smith had mud in the magwell, trigger group and completely covered the rear sight due to some very bad situations and it NEVER failed. This IS the most reliable pistol I have ever had and I have fielded a number of sidearms and I highly recomend one.