So I'm about to embark on my first build. I bought my lower (anderson arms, only one available at the time) a few months back at my local gun store. the guy working told the guy beside me, buying the same lower, that it was the commercial version of the lower. Something about the buttstock threads being different? From the research and reading i've done on this sight there is no commercial or milspec lowers, they're all essentially "the same" measurement wise. the only difference is the buttstock/buffer tube assembly need to be both commercial or both milspec. so my questions are:
1. is my lower a commercial or milspec or neither or does it matter?
2. are there any special considerations i need to take with using this lower?
from the research i've done on this sight i've decided to go with the ST-T2 Heavy Buffer (by Spikes Tactical), which is milspec, therefore i should get a milspec buffer tube assembly and stock, right? and i should have no problems?
also, is the stag arms LPK a good choice or would you recommend another LPK? i've seen people use so many different ones on this site that I'm not really sure whats best.
thanks in advance!