Stripped and Prepped for Your Next AR Build
If you're in the market for a genuine, Stoner-style AR-15 rifle build, then one of the best starting points from one of the most respected AR-15 manufacturers in America is the Knight's Armament SR-15 Stripped Lower Receiver.
Milled to military specifications, the Knight's Armament SR-15 Stripped Lower Receiver is a ready-made foundation for any AR build, since it's designed to accept all standard mil-spec lower parts kits. The lower is machined from battle-proven 7075-T6 aluminum and is treated with a Type 3 hard-anodized finish.
One element to note regarding the Knight's Armament SR-15 Stripped Lower Receiver is that, unlike similar receivers offered by the company and Brownells, these are not designed as ambidextrous lower receivers.
Big Book Catalog, Issue:72, Page:009