txdo_msk

I just noticed this thread as I was wanting to build a .308 and started looking for info on... Ceratac jigs (I bought one of their carbine)! Does anyone know if ceratac is even worth it? Whats the likelihood of dropping in a different lower to work? Or is this where all these measurement are coming into play. Stellar job, BTW. Ive learned a lot just lurking here...