Description
Armament Systems and Procedures (ASP) five shot 44spl conversion of a Ruger Service Six. There were only a few done in the early 80s.
From AI:
(Note AI lists around a dozen. I have heard around 400 were made. I have seen more than a dozen)
Armament Systems & Procedures (ASP) converted a very small, extremely limited number of Ruger Six-series revolvers (both the Police Service-Six and Speed-Six) into five-shot .44 Special handguns. While an exact production figure is never officially published, firearms historians and collectors estimate the total run of these “SWT” conversions to be fewer than a dozen.
These ultra-rare custom revolvers, sometimes referred to as the ASP SWT, are highly prized by collectors for several reasons:
- The Work: The conversions required extensive gunsmithing, which was largely executed by master gunsmith Bob Snap.
- The Cylinders: To fit the larger .44 Special caliber into the compact Service-Six platform, the revolvers required custom five-shot, unfluted cylinders with remarkably thin cylinder walls.
- Features: ASP customizations typically included an unfluted cylinder, smooth bobbed hammer, a unique gray finish, and custom “Jordan” style or slimline grips.




















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