the standard Browning recoil buffer. This also replaced the regular spade-grips with the ones integrated in the cradle. The cradle, now part of the weapon, would then be hooked onto a tripod m/36. This tripod featured, beside a 5×25 power optical sight, advanced elevation and traverse controls. The unprecedented recoil control and steadiness of the tripod made Dolf Goldsmith remark that this arrangement “was undoubtedly the most accurate long-range rifle-caliber machine gun ever made”. For anti-aircraft purposes, a double cradle was made to hold a matching pair of m/36s. The right gun, lacking sights altogether, was fed from the right, while the left gun, with iron sights complemented with an AA sight ring, was fed from left. The cocking handles were located between the guns, while safeties and triggers were individual for left and right. The special AA tripod had elongated legs and chains to either secure the tripod or hang weights on it for extra stability. These double cradles were also used as standard defense, mounted on a ring on the cab roof, on terrain vehicles and armored troop carriers like Terrängbil m/42 KP. The latter was used with good effect in the Congo Crisis in the early-1960s. Until 1966, the m/14-29 and m/36 machine guns could use both the 6.5mm and the 8 mm ammunition. Converting between the two was a matter of changing barrels, cartridge stops, and bolts. In 1966, most were converted to 7.62×51mm NATO. Some old models were retained in training use to use up the stores of obsolete ammunition. After the stocks were expended in the 1970s, all guns were re-barreled to 7.62mm NATO. The weapons were finally taken out of service in the 1995. Ckm wz.30 The Ckm wz.30 was an unlicensed Polish-built modification of the Colt Model of 1924 chambered in 7.92×57mm Mauser. The modifications included new iron sights (V-notch rather than loophole), lengthened butt handle, lengthened barrel, simplified rifle lock for easier exchange of used-up barrels and better handling, mounting adapted for both anti-personnel and AA fire and sights and grips adapted to suit both purposes. Roughly 8,000 were built by Państwowa Fabryka Karabinów. M/29 Norwegian designation for the Colt MG 38 (mentioned in the following section) in , used as the standard heavy machine gun and anti-aircraft weapon for the Norwegian Army from 1929 to 1940. The M/29 replaced the Hotchkiss M1914 machine gun in Norwegian service. In all, 1,800