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Posted: 5/1/2016 5:16:31 PM EDT
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Hi Everyone,
I'd just pick up 2 of the Sig Sauer 516 Stripped Upper Reciever with Gas Impingement Adaptor. I am wondering, How difficult would it be to build a piston upper? In the past 2 years, I have built 4 gas impingement AR upper and none of these 4 uppers has any cycling, feeding and ejecting issues. This will be my 1st piston upper. any suggestion and tips? Thanks |
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If you can gunsmith up a DI upper, than you can handle a GP build. Fundamentally the build process is no different.
Hints: Buy quality parts from a reputable GP kit manufacturer. Ideally from one that has been around >2 years. Fly-by-night co.'s can go out of business at any time and make finding parts should something go wrong a chore. Make sure whatever handguard you select has enough height to clear the op rod. Remember that only all-metal front sights can be used on the front gas block if its railed. I've seen at least two people melt their BUIS. |
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