The Lahti

by
posted on September 24, 2014
** 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. **
lahti1.jpg

Shortly after I got into the gunwriting business, I worked on a 9 mm book project with the late Dean Grennell. One of my contributions to the book was to get ahold of every 9 mm pistol I possibly find and fire them under the same circumstances. I was greatly assisted in this effort by a local collector who seemingly had one of everything and was willing to let me take them out and shoot them. Among things like a Red Nine Mauser, MAB PA15, Artillery Luger and others, I got to fire a Lahti. You never see these big brutes these days, but they were common back then.

Designed in Finland in the 1930s, the Lahti was a 9 mm service pistol intended for the special needs of the Finnish military forces. In a country with severe winter weather conditions, small arms work best when designed for snow and ice. The Lahti was an ingenious recoil-operated pistol that worked on the basis of a massive bolt moving back and forth in a machined steel receiver. To lock the bolt in place at the instant of firing, the Lahti used a steel locking block in the shape of an inverted “U.” It was cammed upward into a recess in the roof of the receiver. Also, the Lahti used an accelerator lever, similar to the one John Browning put in his machine guns, to give the recoiling parts an extra bit of rearwards thrust. In theory and possibly fact, this insured proper function in extreme low temperatures.

The Finnish-designed and made Lahti was quickly accepted as a reliable and accurate pistol. It was so good that the Finns licensed the rights to make the gun in Sweden for that country’s armed forces. Most authorities agree that the Swedish modifications to a proven design were ill-advised and did not result in a pistol of the same quality. As a matter of fact, one reliable source (the Hogg & Weeks Pistols of the World) rates the Finnish Lahti as a strong competitor with the Sig P210 as the best service pistol in the world. Heady praise.

Latest

Pete Hegseth
Pete Hegseth

U.S. Army Bases Will No Longer Be Gun-Free Zones

U.S. Secretary of War Pete Hegseth announced this week that U.S. Army bases will no longer be gun-free zones.

Gun of the Week: CZ Shadow 2 Carry

One of the latest concealed-carry handguns to hit the consumer market is the CZ's Shadow 2 Carry. Watch our "Gun of the Week" episode to see the details of this carry-oriented design.

The Armed Citizen® April 3, 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.

In Memoriam: Lt. Gen. William Morgan Keys (1937-2026)

Lt. Gen. William M. Keys, a decorated war veteran and former President and CEO of Colt Defense and Colt’s Manufacturing Company, passed away on Jan. 24.

2026 NRA Board Election Results (Updated)

The National Rifle Association is pleased to announce the results of the 2026 elections for the NRA Board of Directors.

A Celebration of American Freedom: The 155th NRA Annual Meetings & Exhibits

With acres of exhibition space, addresses from NRA’s leadership, an epic country concert and literally tens of thousands of guns on display, the 155th NRA Annual Meetings & Exhibits in Houston­—and our nation’s 250th celebration—are not to be missed.

Interests



Get the best of American Rifleman delivered to your inbox.