Alrighty, so I've been obsessively researching the AR platform (as one does), and looking to put together some tools for my build. Looks like I'm going to need some roll pin holders, roll pin punches, and a barrel wrench and vice blocks. I'm looking at the Magpul BEV block, and can't find much in the way of reviews. Everything I've read about the Magpul Armorer's Wrench makes it sound like the be all end all of Armorer's wrenches. Is it worth the cost? I mean, you could almost buy 3 cheapies for the price of one Magpul...