I think this is the proper place to ask about what I need to change, if any thing, so that I won't damage the gun (or me!). What, if any, change is need to shoot a 7.62 x39 upper with a stock M4 clone lower? Do I need to change the buffer (maybe a heavier one?) or buffer spring?(again maybe an extra strength one?) I have fired a few rounds and while I had zero issues with function, I did notice more recoil and don't want to break anything. While I have some experience with the AR platform, it is mostly with stock 5.56/.223 guns and I have decided that I should build, or have built, a dedicated lower for this upper and think it makes sense to ask if I need to do anything special to make it last as well as function. Any thoughts? Thanks in advance.Information
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