Ruger SP101

Lore & Background

The Ruger SP101 was introduced in 1989 as the smaller-frame counterpart to the GP100. Together, these revolvers replaced Sturm, Ruger & Co.'s long-standing staple in the American firearms market, the Ruger Security-Six series revolvers. A 9 mm version was available until its discontinuation around 1998 but was later re-released in early 2018. A basic .22 LR version was also available until 2003 while a redesigned version was introduced in 2011.

The SP101 features stainless steel construction, a transfer bar safety mechanism, and a firing pin mounted in the frame. The transfer bar is connected directly to the trigger. Sights are fixed on all calibers, or adjustable on .327 Federal Magnum, .357 Magnum, and .22 LR models. The hammer may be spurred or spurless (double-action only). Barrel lengths include 2 in, 3 in, and 4 in with full underlugs, and 4 in with half underlug. Spurless-hammer models are designated by an 'L' in their catalog numbers.

The New York Police Department used a specific SPNY Double Action Only (DAO) .38 Special model made for the NYPD as a backup gun, off-duty, or detective use.

Reader's Guide

The Ruger SP101 occupies a notable place in the history of Sturm, Ruger & Co. as the smaller-frame companion to the GP100, together replacing the long-standing Security-Six series. Its all-steel construction in a compact frame made it a durable choice for concealed carry, and its availability in multiple calibers and cylinder capacities—from five-shot .357 Magnum to eight-shot .22 LR—allowed it to serve a variety of roles. The introduction of a 9 mm version, its discontinuation around 1998, and its re-release in early 2018 reflect changing market demands. The .22 LR version was available until 2003, with a redesigned version appearing in 2011. The SP101's adoption by the New York Police Department as the SPNY DAO .38 Special for backup, off-duty, and detective use underscores its reputation as a reliable service revolver. Its transfer bar safety mechanism, connected directly to the trigger, and frame-mounted firing pin are consistent with Ruger's design philosophy. The SP101 remains in production in .327 Federal Magnum, .357 Magnum, 9 mm, .38 Special, and .22 LR, with barrel lengths and sight options varying by model.