Another heads-up ahead of the SHOT show: ArmaLite will be unveiling its National Match A1 AR-50, the unidentified rifle lingering on banner ads in the run-up to America’s largest gunfest. TTAG’s winkled-out some of the details of this superbad version of the American gunmaker’s .50 caliber rifle, starting with the fact that the A1’s got a longer barrel than the standard model (33″ vs. 30″), with eight flutes (no less). That would help explain the A1’s reported sub-MOA accuracy to 100 yards—and beyond! The fact that the A1’s got a match chamber—rather then standard military affair—might have a little something to do with it as well. New for the A1: a skid system to stop the gun from, uh, skidding; retrofittable to the standard AR50. All this large caliber goodness is likely to clock-in at or under $4k. Such a deal!