Hello All, I purchased the receiver from OOW and sent them the barrel to index, they sent it back to me . Its fairly easy to build up from that point. If you don't already have this link, save it. It can help with any build questions. https://docs.google.com/viewer?a=v&q=cache:2vD7bLf6ZzsJ:stevespages.com/pdf/browning_1918a2_shop_manual.pdf+m1918+browning+automatic+rifle+manual&hl=en&gl=us&pid=bl&srcid=ADGEESgSPhKIfXbC4kCRfRXVE2FRNfm1MezdMmuRlfOVFZ09zYul0qk8DC69ISSQw2wojMJA54Ix3Nx7vY3PMAKyhWmUg-6RPs-8aOiwIHn922I0mihlX05-NXCgzF_4nfiAvyPMSLk-&sig=AHIEtbTJVYH6GBSg26n-lVFul2FRmLDjtQ