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9/22/2017 12:11:25 AM
Posted: 4/1/2006 8:01:47 PM EDT
what is different about it than a regular length gas system?

Link Posted: 4/1/2006 8:02:51 PM EDT
If I'm building a new rifle and get a mid length gas system is there anything I should look out for?
Link Posted: 4/1/2006 8:10:50 PM EDT
Try this link:


I have been following this line of thought for a while and bottom line is it's the size of the port, and how far down the barrel/residual pressure or dwell time issues here.
Link Posted: 4/1/2006 11:14:11 PM EDT

what is the standard distance of the port in a rifle length one?
Link Posted: 4/1/2006 11:27:49 PM EDT
The mid-length gas system is 2" longer than the Carbine version and about 4" shorter than the rifle length one. The 'middy' is generally acknowledged to have a milder recoil and more reliable extraction. In addition, the 2" longer sight radius and 2" longer front handguard (over the Carbine's) help with accuracy (sight) and allows one a broader range to put ones front hand and/or more real estate for your add-ons.
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