Buy what you can afford. If it's a cheaper one stake the bolt and castle nut then shoot the hell out of it. You could build a nice one under a grand look at bravocompanyusa. Also save for a decent optic, I like aimpoint for a Red dot and eotech is ok also. The rock river arms are a good gun for the price. If you can sad a few extra get a colt it'll last forever.
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