i just bought my first sig. a p229r. i have a glock 23, 27 and a kahr pm9. with the sig being the first gun w/ an external hammer fired action, i have a question about it. i have heard that the sig guns are extremely reliable, so forgive me if it sounds stupid... if debris such as mud, sand, foreign object, etc gets into the hammer area. can it fail to fire? i was just wondering about the reliablility of having an hammer fired vs a striker fire... whatever term you like to use for it.