Developed by BSA and Captain H.C. Boys under the name "Stanchion" and renamed on acceptance in 1937, the Boys Rifle fired a proprietary .55 caliber armor piercing round. Many were converted to .50 BMG after WWII, with few left in the original .55 Boys and fewer still brought back to the States. While wartime developments in armor technology made these rifles obsolete for their original job, they found use targeting softer vehicles, enemy equipment, and snipers in cover too sturdy to punch through with conventional weapons, essentially becoming anti-material rifles decades before the term would be coined. Fitted with the early "circular" muzzle brake, left-offset blade front and two-position elevation adjustable peep sights and a top loading Bren-style magazine. The barreled receiver is installed in a steel frame with integral shock absorber, folding "T" shaped front monopod, hardwood cheek rest and rear pistol grip, and a rubberized shoulder pad with integral oiler. Included with the rifle is a canvas muzzle cover, ammo pouch, and ten rounds of .55 Boys ammunition loaded into two stripper clips.

Fine as assembled (mixed numbered barrel), with 60% of the arsenal quality blue finish, showing areas of brown patina, scattered spotting/rust, and mild handling marks. The rubberized pad is deteriorated/damaged, otherwise the stock is very good. Mechanically excellent. NOTE: This Destructive Device is a National Firearms Act (NFA), fully transferable Class 3, which is registered with the Bureau of Alcohol, Tobacco, Firearms and Explosives, (BATFE) under the provisions of 18 U.S.C. Chapter 44 and 27 CFR part 479, National Firearms Act.