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

Women outside with rifle on rest
Women outside with rifle on rest

Three Hidden Joys of the Rifle

There is a particular jolt of joy when a shooter nestles behind a perfectly stable rifle and puts the ideal bullet exactly where intended.

New For 2026: Smith & Wesson M&P15 AXE

The new Smith & Wesson M&P15 AXE is not only the latest in the company's series of AR-style rifles, it marks the first S&W rifle to be chambered for the .300 Blackout cartridge.

The Armed Citizen® July 27, 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.

Skills Check: The Meltdown Drill

Our drill this month trains you to acquire a multi-round-durable grip from the start and continually pressure-test it under time and transition stress, holding you to an all-clean-hits standard.

EAA Corp. Acquires Manufacturing Facility in Tennessee

European American Armory’s recent acquisition of a large manufacturing facility in Mountain City, Tenn., is further evidence that the firearm importer plans to establish a domestic manufacturing presence.

Short & Classic: Auto-Ordnance M1 Carbine SBR

While many short-barreled rifles available today are based on the latest designs, there are a few classic models in the mix, too, such as Auto-Ordnance's M1 Carbine SBR.

Interests



Get the best of American Rifleman delivered to your inbox.