April 5th, 2018

Old Meets New — Modern Modular Chassis for Swiss K31

Sureshot Armament group SAG K31 modular tactical chassis

You’ve never seen a Swiss K31 like this before…

The Sureshot Armament Group (SAG) has developed a modular aluminum chassis for the vintage, straight-pull Swiss K31 rifle. This chassis transforms an old classic into a modern, fast-cycling tactical rig. The SAG Lightweight K31 Rifle Chassis is CNC-Machined from aluminum. Hard anodized, it weighs just 2 lbs. 13 ounces. It offers adjustable cheek piece and butt-pad, with a three-inch LOP adjustment range. Believe it or not, installing a vintage K31 into this SAG stock is an easy bolt-on process. No modification of the K31 action is required.

The chassis-builder SAG states: “The main idea behind the SAG Lightweight K31 Rifle Chassis was to give the shooter …ergonomics of a Tube-gun but with lines of the classic rifle. The chassis ‘wraps’ the shooter around the rifle, moving bolt operation under the shooters cheek to allow the marksman to maintain cheek weld during the whole shooting series.” The chassis design also allows a more forward optics placement for better eye relief.

Sureshot Armament group SAG K31 modular tactical chassis

Sureshot Armament group SAG K31 modular tactical chassis

SAG Lightweight K31 Rifle Chassis Features:
CNC-Machined Aluminum with hard-anodized matte finish
Easy bolt-on installation to Swiss K31
Adjustable Cheek Piece (0-30mm)
Adjustable Buttpad to set LOP (11.5” – 14.5”)
KEYMOD Interface on fore-end and buttstock
Accepts any AR-type pistol grip
Overall chassis weight: 2 lbs. 13 oz. (1280 grams)
Chassis MSRP: €950 ($1163.00 USD)

Sureshot Armament group SAG K31 modular tactical chassis

About Switzerland’s Original Karabiner Model 1931 (K31)
The Karabiner Model 1931 (K31) is a magazine-fed, straight-pull bolt action rifle. It was the standard issue rifle of the Swiss armed forces from 1933 until 1958, though examples remained in service into the 1970s. It has a 6-round removable magazine, and is chambered for the 7.5×55mm Swiss Gewehrpatrone 1911 cartridge (aka GP 11).

Sureshot Armament group SAG K31 modular tactical chassis
Wiki Photo by Bouterolle, CC BY-SA 3.0

Although the K31 is a straight-pull carbine broadly based on previous Swiss “Schmidt–Rubin” service rifles and carbines, the K31 was not designed by Colonel Rudolf Schmidt (1832–1898) as he was not alive in 1931 to do so. Mechanical engineer Eduard Rubin (1846–1920) was the designer of the 7.5×55mm Swiss ammunition for which previous Swiss service rifles and the K31 are chambered. The Karabiner Model 1931 was a new design by the Eidgenössische Waffenfabrik in Bern, Switzerland under Colonel Adolf Furrer (1873–1958). The Karabiner Model 1931 replaced both the Model 1911 rifle and carbine and was gradually replaced by the Stgw 57 from 1958 onwards.

Permalink Gunsmithing, New Product, Tactical 10 Comments »
June 11th, 2015

Shooter Hits Bison Target at 2240 Yards with Iron Sights

World Record Iron Sights K31 Buffalo bison Utah

Could you hit a buffalo at 1.27 miles (2240 yards) … with iron sights? Impossible as that may seem, that’s exactly what Ernie Jimenez did last month at the North Springs Shooting Range in Price, Utah (elevation 5,627′). Shooting a milsurp Swiss K31 rifle chambered for the 7.5×55 Swiss round, Jimenez placed four hits on a three-foot-high, bison-shaped steel target placed a staggering 2240 yards from the firing line. Not bad for a rifle which Jimenez acquired many years ago for just $99.00. Of course he did have plenty of misses along the way (and Ernie even managed to hit the plate shielding his camera).

This video is set to start half-way through, when the shooter starts making hits:

(more…)

Permalink - Videos, Shooting Skills 9 Comments »