Hello I am building PSA AR-V upper and lower kit my question is I am building a 8.5 inch pistol what weight buffer and spring should I be looking at running on this setup?
Welcome @kirkland331 ! That is a question that I have also. @Josiah_PSA might can give us an answer, or maybe one of the other folks on the forum that have ar-v’s.
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Love to know as well. I have been looking at the hydraulic buffer and 308 spring.
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I’m running an AR9 weight buffer with a standard carbine spring. No issues.
Running a 4.5" Ballistic Advantage barrel, STD carbine spring and Spikes ST-9X buffer (~7.7oz),
Running suppressed, it still cycles supervel Hush puppy 147 which is prettyweak stuff, I could probably (and want to) use even more weight to limit port pop as much as possible. Have no idea running without suppressor.
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I ended up replacing the short 5.5oz buffer for a 8oz extended buffer and added a cut down spacer. This made a huge different in recoil and its much smoother now.
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Most 9mm AR builds work best with 22-24oz of bolt+buffer total mass. Extended-length buffers with sliding internal weights prevent bolt catch breakage and help reduce bolt bounce.
Here’s a buffer selector to help explain the options and help with choosing the proper weight.
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Hello all, I’m wondering if the same buffer weight is the same across all models. I’ve got the ARV MP5 looking model and I have an orange top weight with bird shot in it. I’ve already put around 400 rounds of aac 124 grain through it. And the only issue I have is when I use Magpul magazines.
Now I think a spacer and extended buffer weight is ideal. However, I’ve put close to a million rounds down range in my life and don’t feel the buffer smacking the rear of the tube when fired. (Nor do I hear it, I wear Sordin’s so I can hear everything when I shoot.) This 7” barrel has manors and the recoil impulse is quite polite. What are your guy’s thoughts on a spacer and extended buffer? Needed or not?
I use one or the other. You can check if you need a space by pulli g thr charging handle and then using your finger through the ejection port to see if you can continue pushing the bcg rearward.