Save your money and buy a decent set - JE Machine Tech AR-10/15 Mil-Spec 4 Position Micro Buttstock Combo

I bought this set for a budget build. Well, I'm trying to go direct to JE so I don't have to go through all the return problem. The buffer tube HSA NO GROOVE for back plate. the tube is threaded but not the kind that has a lip or little cut ou to index the buffer stop. The groove thats suppose to be on bottom to keep buffer square with reciever is not there. they missed it. looks like the kind you get for pistol builds. they dont usually have a groove either unless you get an ajustable tube. The micro stock is ok I guess. I will throw that on a shotgun I have and use the Magpul stock on this build. spring is shorter than most and I know my sorings I even invented a devise to actually measure lbs. and oz. compressed. this spring is under 11" which is not great to start with. it is what it is. its a budget kit but..at least the groove should be there otherwise the buffer tube is useless. Im not going to gring the tab off the back plate and then hope that staking the castle nut will keep it all lined up..44.00 I got less than I paid for. that groove is actually one of the most important things that needs to exist. lol whatever....just spend the money on either a better set or just buy all the parts separately and be done with it. I hope the company justs makes it right for me and I dont have to fool with shipping and trying to find a way to ship. I live in no mans land NH way up north...