Wish I could help you out. I did consider buying a Osprey Defense Gas Piston Retrofit Conversion Kit to try out. I also looked an an Adams Arms. What made me balk was that the gas piston kit isn't compatible with a majority of handguards and free float rail systems. Also, I didn't want to have to deal with the possibility of carrier tilt and having futz with even more parts to address it.
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-John
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