Dissecting The P938

Let’s look at what’s inside SIG SAUER’s mini 9mm.

by Dick Maheu

The Sig Sauer P938 is a well made 9mm in a small package, built for ruggedness and concealability. It’s a six shot, mechanically locked, short recoil operated, semi-auto, single action only pistol.

We’ll start with the P938’s operating characteristics. The slide lock is pushed up by the magazine follower after the last round is fired from the magazine, locking the slide back. The automatic firing pin safety blocks the firing pin unless the trigger is pulled. The hammer has a safety intercept notch (quarter cock notch) keeping the hammer off the firing pin if desired. The disconnector keeps the hammer from falling when the slide is out of battery and not fully closed.

The pistol has high contrast drift adjustable sights with a double white dot rear and a single white dot front. There are six different rear sight heights available from the factory and each increment moves point of impact two inches at 25 yards and five different front sight heights yield one inch of change. The thumb safety up (on) blocks hammer movement either cocked or uncocked. The slide can be cycled when the hammer is cocked and the safety engaged. With the hammer down (uncocked) and the thumb safety engaged, the slide is blocked and cannot be cycled. The pistol has a three-inch barrel. The pistol featured in this article has a black hard anodized aluminum frame and a stainless steel slide weighing 16 ounces unloaded. There are several different configurations of the P938, differing mainly in grips, sights, and regular or stainless steel slides. P938 disassembly also applies to the P238 .380 ACP as well.

Read more in the November 2016 issue.

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