DA/SA Transition

by
posted on March 26, 2013
** When you buy products through the links on our site, we may earn a commission that supports NRA's mission to protect, preserve and defend the Second Amendment. **
wiley-clapp.jpg (3)

Back in the 70s, there was a great deal of experience behind police trainers and the procedures used to make competent handgunners out of rookie cops. For the most part instructors were teaching the use of wheelguns, one of the more forgiving handguns ever made. But the move to automatic pistols came along in that period and things changed. Police adopted autos, quickly deposing the DA/SA revolver. SigSauer/Beretta/S&W and a few other autos were the first guns of choice. Most of the guns of that day were cocked for the first shot by trigger pressure, with subsequent shots cocking when the slide recoiled and returned to battery. A first-class trainer, whose experience spans those early years to date, recently commented to me that it was actually easier to teach DA/SA autos when everyone was coming off revolver skills.

There is a problem inherent in that first-shot in double action to the second shot in single action, and it’s more than just the different feel of the two trigger actions. The thick butt sections of most autos makes for an unwieldy grip at best. People with all but the biggest hands may have control of the gun, but they find themselves shifting the gun in their grasp just a little when the go from DA to SA. That leads to all kinds of typical trigger control problems—jerking, heeling, flinching, etc. On-target groups spread out to poncho size. If there is any way to resolve this dilemma for the struggling handgunner, it has to be through a complete understanding of trigger reset.

Reset is that point in the forward motion of the trigger where the trigger/sear/hammer linkage allows the shooter to stop and reverse the motion to fire again. You can actually feel—and sometimes hear—a tiny click when this happens. It happens in DA, SA or even DAO trigger systems. Basically, learning to reset the trigger means that you are reducing the distance the trigger travels in firing multiple shots. It has significant advantages in any form of shooting, but we’ll leave that for another time.

Latest

HK VP9CC 01
HK VP9CC 01

Heckler & Koch VP9CC: The VP9 Goes Micro-Compact

Based on the company's popular striker-fired VP9 platform, the new Heckler & Koch VP9CC takes the features of the full-size original and shrinks them into a micro-compact package for concealed-carry use.

The "Frenchified" BAR: France's FM 24/29 LMG

Following World War I, the French military considered adopting the Browning Automatic Rifle, but cost considerations and national pride forced the development of a domestic design: the FM 24/29 LMG.

How Money Turned the Mainstream Media Against Our Freedom

Major changes in the American media landscape have thus far, and in general, contributed to a more partisan treatment of the Second Amendment.

I Carry: Springfield Armory SA-35 in a Galco Combat Master Holster

See the Springfield Armory SA-35 4" High Power pistol paired with a classically styled Galco leather OWB holster and a Buck 110 Auto knife our latest "I Carry" EDC kit.

How the Mainstream Media Turned Against Armed Citizens

Why is so much of the mainstream, legacy or corporate media opposed to our right to keep and bear arms? There are real answers to this question.

The Armed Citizen® April 10, 2026

Read today's "The Armed Citizen" entry for real stories of law-abiding citizens, past and present, who used their firearms to save lives.

Interests



Get the best of American Rifleman delivered to your inbox.