When Indonesia won its independence in 1949, its military had a real mess of different equipment. The SMLE was adopted as the first standard rifle, ut these were in short supply and a lot of Arisakas and Dutch Mannlichers were also in the country’s possession. Looking for a weapon for rural police using the now-standard .303 British cartridge, the Indonesian government decided to revisit a program to convert 6.5mm M95 rifles and carbines to .303 – something initially done with Australian in 1941.
With Australian advisors from Lithgow, the Indonesian PSM factory gear conversions in 1951, and continued them into early 1955. In total, 13,999 M95/51 conversions were made, 9,904 of them carbines and 4,905 short rifles. They were made by reboring the original 6.5mm barrels to .303 and reaming the chambers out (although does result in a slight double shoulder to fired cases). The carbines (with 19″ barrels) were fitted with a variety of muzzle brakes, and made for an as-yet unidentified pattern of bayonet. The short rifles (with 26″ barrels) were given new 2-position rear notch sights, but left using standard Dutch M95 bayonets.
The guns were used in police and possibly military training roles until removed from service in 1961. A batch was sold as surplus in 1962 to InterArms, and another batch was found in the late 1970s and sold to Odin in the early 1980s. The InterArms guns tend to be in better condition, and have intact Indonesian markings, where the Odin guns are generally rougher and have the government property marks ground off.
The “double shoulder” problem could have been avoided by setting the barrel back about 1/8″ (call it three threads’ worth) in the receiver before boring out the chamber.
It’s the way the original M1903 Springfields in .30-03 (7.62 x 65mm) were converted to the definitive .30-06 (7.62 x 63mm) in 1906-07.
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