I looked up the spec for the buffer tube, 1.147. I measured mine at 1.150. Used a Vernier Caliper. I would think this is Mil-Spec. Any thoughts?
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I looked up the spec for the buffer tube, 1.147. I measured mine at 1.150. Used a Vernier Caliper. I would think this is Mil-Spec. Any thoughts?
http://m4carbine.net/showthread.php?t=101
First post in that thread - good info, aside from just the dimensions.
commercial tubes have a slanted back and they measure 1.168, i think you're ok
There are always variances in the tubes, so 1.15 may be a little tight, but it is fine. Commercial tubes are usually 1.17 inches and slightly larger.
Thanks for the info and thought's.
Easiest way to tell is the threads.
Mil spec threads will be raised above the RE which commercial threads are generally inset in the RE.
But know this not all RE's are equal. Alot of manuf. who claim milspec are not extruded 7075.