APOD Firearms

Gas block for incoming can

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  • RussSurfs

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    So I have an OSS suppressor at the FFL waiting on the ATF. Given the current wait time it should be available to me in the next 30 or 45 days. I have two different AR’s I plan to run it on. Neither has an adjustable gas block. Do I need to swap out the gas blocks before I run it on them?
     

    Little Jack

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    The flow through on the OSS is supposed to reduce the back pressure common with most cans.

    I'd shoot it first and see what you think.

    Back pressure is going to be dependent on the type/volume of the can, ammo, gas system length, dwell time, gas port size buffer/spring weights etc. There's a lot of ways to deal with it but if you like how it shoots, you don't need to mess with it.
     
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