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Old June 13, 2014, 07:00 PM   #8
FrankenMauser
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Join Date: August 25, 2008
Location: In the valley above the plain
Posts: 13,390
Based on the numbers in that link...
My DPMS vented rifle length FF tube is 5 ounces heavier.
And the Todd Jarret extended rifle FF tube is 2.5 times as heavy (13 ounces heavier).



One thing to keep in mind, though:
Some companies have been known to only list the weight of the FF tube itself, and don't include the weight of the barrel nut. In some cases, that can make a huge difference. Your typical aluminum FF tube barrel nut weighs about 1.5-1.8 oz; but the typical steel FF tube barrel nut weighs 5-7 oz.
When you're worried about weight, that hidden 1/3 lb is significant.
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