Interesting. Most 20 MOA bases I know of are for bolt guns. Most AR platforms don't use bases - the rail on the receiver is all that's required. Most ARs, e.g. POF, have 0 MOA rails (the Larue OBR is an exception, it has 20 MOA built into the receiver). Individuals needing 20 MOA on an AR platform usually use an appropriate one piece base; it saves stacking an angled base on top of the AR. An example of an angled one-piece base is the Larue Tactical LT-158 http://stores.homestead.com/Laruetac...tail.bok?no=42. Just a suggestion.
For another suggestion - I recommend you re-read the email you recieved when you registered and comply with it. Your first post is supposed to be an introduction; not a new thread asking a question that has been discussed previously. FTFSI is not a good way to make our acquaintance.
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A nation can survive its fools, and even the ambitious. But it cannot survive treason from within. An enemy at the gates is less formidable, for he is known and carries his banner openly. But the traitor moves amongst those within the gate freely, his sly whispers rustling through all the alleys, heard in the very halls of government itself. For the traitor appears not a traitor; he speaks in accents familiar to his victims, and he wears their face and their arguments, he appeals to the baseness that lies deep in the hearts of all men. He rots the soul of a nation, he works secretly and unknown in the night to undermine the pillars of the city, he infects the body politic so that it can no longer resist. A murderer is less to fear.
~ Marcus Tullius Cicero (42B.C)
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