I purchased a used S&W M&P .45, black stainless with the numbers 13 /44 in gold lettering, and there is a lightening bolt between the numbers. I have the original case, manual and paperwork, but nothing describes what the 13/44 represents. The mags are 10 rounds and the barrel is 4.5 so that...
I have a M&P 45 with a low round count. The trigger in the early stages feels like it is catching on something while being pulled. The last half of the pull is too firm and needs to be lightened. Any suggestions for a fix without replacement?