I'm new to Hk rifles, so plz excuse my ignorance. First, is it better to build a HK91 clone or buy one (PTR91GI)? When building, what cost range would I be looking at? I'm familiar with M14 (LRB) and M1A(Springfield) when it comes to build or buy, and yes, there is a difference. Just wondering if I'm looking at the same kind of differences, in price and quality, with the Hk platform. Also, who does builds and what should I be looking for? I'm wanting a good battle rifle, never know when your gonna need one, and one that I can trust to last even in a worst case scenario. SHTF kind of thing.