Long-range shooting with an AR-15 means different things to different shooters. However, the basics of achieving long-range accuracy come down to two things—barrels and bullets. Here’s a history of how refinements in those crucial areas got started.
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The AR-15’s bolt and carrier are the heart of the rifle, so knowing the ins and outs of the bolt carrier — weight, platings and coatings, firing-pin hole size, and bolt choices — can make your AR run more smoothly and reliably. Read this post to discover how to keep your AR-15 working properly with the right bolt carrier assembly, firing pin holes and firing-pin retainers.