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This is a discussion on AR15 within the General Firearm Discussion forums, part of the Related Topics category; Looking to purchase an AR.What are the pros and cons of gas and piston? Also can parts interchange from different manufacturers?...

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  1. #1
    New Member Array R.L.Freeman's Avatar
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    AR15

    Looking to purchase an AR.What are the pros and cons of gas and piston? Also can parts interchange from different manufacturers?

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  3. #2
    Distinguished Member Array kapnketel's Avatar
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    Gas runs a cleaner as the bolt is not driven by exhaust gasses. Piston guns are more money, and I would rather put the money into a good optic. As for part interchangeability, as a general rule yes but not always. Do not assume interchangeability.
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    VIP Member Array Smitty901's Avatar
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    Quote Originally Posted by kapnketel View Post
    Gas runs a cleaner as the bolt is not driven by exhaust gasses. Piston guns are more money, and I would rather put the money into a good optic. As for part interchangeability, as a general rule yes but not always. Do not assume interchangeability.
    Agree for the most part. The gas piston is great but if the cost is a deal breaker for you then it the stick with the stand weapon. Better to buy quality than just because it it a piston system.
    AR/M4 if it cheaper there is a reason no madder what system you go with.

  5. #4
    Senior Member Array IAm_Not_Lost's Avatar
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    At this point - as the above posters have suggested - I would stick with a quality direct gas impingement instead of spending the extra dollars to get a gas piston system. I don't think the durability and reliability of a gas piston AR is significant enough to account for the additional cost.
    "Brilliant. So now we got a huge guy theory, and a serial crusher theory. Top notch. What's your name?" - Paul Smecker

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