Having decided to build a "long" AR, I've compiled a few parts over the last year or so from various trades and WTS ads. The other night I decided to assemble the upper.
The upper is an Aero and came with the barrel nut. I have a free float tube I bought by accident (bought wrong part number for one of my AR15s) I wanted to use, but the barrel nut is too small.
I read where there are 2 common threads, 1-7/16 -18 I think and another 1-7/16 with a different pitch. However, this barrel nut is about 1.300" , between the 1-7/16(1.438") thread and the AR-15 standard 1-1/4(1.250")
What does my hg fit?
The upper is an Aero and came with the barrel nut. I have a free float tube I bought by accident (bought wrong part number for one of my AR15s) I wanted to use, but the barrel nut is too small.
I read where there are 2 common threads, 1-7/16 -18 I think and another 1-7/16 with a different pitch. However, this barrel nut is about 1.300" , between the 1-7/16(1.438") thread and the AR-15 standard 1-1/4(1.250")
What does my hg fit?
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