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This gas system is not new. back about in 1983, a company calling itself Rhino was doing custom jobs on Armalites for police and civvy use in the USA. From the info sent to me at the time, it resembled the gas system of the AR18 rifle and the L85A1 (SA80).
It is a good gas system (its even found on the 5.56 x 45mm ULTIMAX LSW from Singapore), and with the short stoke using a two piece piston, there is ZERO carbon or fowling of any nature passed thru to the bolt carrier.
However there is more moving parts (at least 3 including the spring), and thus prone to wear and tear, where direct gas has only the long term wear of a cheap gas tube and bolt carrier key. Direct gas systems have been around for more than 60 yrs now). The idea to utilise this system on a fleet wide conversion was dumped by yhe US Army over 20 yrs ago. Cost prohibitive I guess? After all there are 100s of thousands of these beasts in the national fleets of Canada, USA and Australia alone.
Cheers,
Wes
It is a good gas system (its even found on the 5.56 x 45mm ULTIMAX LSW from Singapore), and with the short stoke using a two piece piston, there is ZERO carbon or fowling of any nature passed thru to the bolt carrier.
However there is more moving parts (at least 3 including the spring), and thus prone to wear and tear, where direct gas has only the long term wear of a cheap gas tube and bolt carrier key. Direct gas systems have been around for more than 60 yrs now). The idea to utilise this system on a fleet wide conversion was dumped by yhe US Army over 20 yrs ago. Cost prohibitive I guess? After all there are 100s of thousands of these beasts in the national fleets of Canada, USA and Australia alone.
Cheers,
Wes