16" Anderson A4 Dissipator with Rifle Length Gas System

[prepare]

[RUTGERS95]

love it

[prepare]

Curious about that rifle length gas system with a 16" barrel?

[Todd.K]

Curious about that rifle length gas system with a 16" barrel?

Fun range toy. Too easy to choke with dirt, cold, and / or lack of lubricant for real use. Colt toyed with the idea in the early carbine days but dropped it as too unreliable.

[jsbhike]

Doesn't a Mk 18 have even less barrel past the gas port?

[Slater]

So what does it do that a regular 20 inch barrel won't?

[Todd.K]

Doesn't a Mk 18 have even less barrel past the gas port?

The velocity increases with a longer barrel. So even if there is the same distance from the port to muzzle there is less time that the port is pressurized.

The pressure drops significantly from carbine to rifle gas, so there is less energy to tap.

[grizzman]

It'll fit into a shorter gun case, and be easier to use in confined spaces, and........I can't think of anything else.

So what does it do that a regular 16" with mid-length FSB won't? The only answer I can come up with is....nothing. This is especially true with an RDS installed, which negates the increase in sight radius.

If I were forced to use what appears to be a dissipator for anything beyond a range toy (don't have any desire for such a carbine), it'd need to be a mock dissy.

[26 Inf]

So what does it do that a regular 20 inch barrel won't?

They look cock as shit.

Before I retired Sully built us three dissy's with his entry stocks. Nice, smoooth impulse. A mid-length with an A5 or rifle extension and buffer seemed to be just as good.

But the diddy has a high CDIF.

[Todd.K]

A middy 16” with FSB is the practical solution. Maybe someone with very long arms needs the rifle handguards, but it’s mainly just aesthetic preference.

But people forget how handy an A1/lightweight 20” barrel is. An 18” lightweight barrel with FSB would be even better, and much more reliable than the 16” rifle gas.