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Archived [ARCHIVED THREAD] - Gas block to BARREL spring pin diameter
Posted: 1/14/2019 8:43:24 PM EDT
I have a ballistic advantage that had the gas block pinned at the factory. I am hoping someone may be able to tell me the diameter of the spring/roll pin they use? I installed the barrel and would like a couple to have on hand.

Thanks in advance!

Link Posted: 1/14/2019 9:01:14 PM EDT
[#1]
Taper pin, straight pin or roll pin?  Normal GB pins are tapered.

Example : https://www.amazon.com/Hillman-Group-556-1-Inch-12-Pack/dp/B00HYK3QSC
Link Posted: 1/14/2019 9:28:00 PM EDT
[#2]
It’s a hollow spring pin.

Link Posted: 1/15/2019 5:10:22 PM EDT
[#3]
BA says to use a #4 roll pin punch starter; so sounds like that pin is 1/8" diameter.  Length is probably 1/2" to 5/8".
Archived [ARCHIVED THREAD] - Gas block to BARREL spring pin diameter
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