Hello all! This is my first post on the forum to I apologize in advance for any formatting errors this may have. After years of waiting I finally got my hands on my dream firearm: The Daniel Defense MK18. I ended up snagging the pistol variant with the law folder during a Black Friday sale. Long story short after going to the range I quickly was able to identify that it was quite under gassed. I was experiencing quite a few failure to extracts regardless of what magazine I used and when I was able to get it to operate somewhat well the bolt always failed to lock back once the magazine was emptied. After reading a few forums on here it seems that I need to swap the buffer out. I suspect this has something to do with the extra length added by the law folder. On the Daniel Defense website the pistol is listed to have an H buffer installed. What buffer should I be swapping to to help mitigate under gassing issues?