I own a A&K M249, and it is a very solid piece. It also has the easiest (and heaviest) gear box to work on ever....ever. Its basically a brick of aluminum, it comes out by loosening 4 screws and thats it. Its also has the quick change spring feature which allows you to use it our doors and indoors. The spring can be changed in under 45 seconds and that is not an exaggeration either. It is heavier than the RPK though, but the up side is that its not a commie weapon
,,,better dead than red!!!