The Troy BUIS is good to go. Sight it in and roll with it (or use what came on the gun) until you can afford an EO, Triji or Aimpoint on a decent mount. You may want a 1/3 co-witness, thats what all the cool kids are using these days. I still like my dot on top of my front sight post (true co-witness). No worries, no hurries. Sounds like you have the gun. Go out and shoot the hell out of it and master the iron sights while you are saving up for an optic.
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