Yes.
http://www.serbu.com/bfg50.htm
BFG-50 Specifications:
Caliber: .50 BMG
Action: Single-shot (or 5-round magazine-fed...coming soon)
bolt action, sliding plate extractor, plunger ejector
Length: 51.50 inches
Weight: 22 pounds (without scope)
Barrel: Lothar Walther Match grade alloy steel, 1:15" twist, 29.5" long, custom taper
Muzzle brake: Harmonica type. New "Shark Brake" optional (shown above)
Stock: Extension of receiver tube, thick rubber butt pad
Fire control: AR-15 trigger and safety, custom hammer, spring-loaded firing pin. Average Trigger pull is 4.0 pounds
Scope mount: Screwed-on Picatinny rail
Bipod: Custom BFG-50 bipod available (shown above)
Finish: Parkerized (manganese phosphate)
Availability: We've shipped over 500 guns....there's a 2 week wait for the single-shot; we're still working on getting the mag-fed and the semi-auto into production.