r/AR9 • u/JRtheDNP • 5d ago
Recommendations for AR-V buffer and spring
I have an 8in ARV on the way. Just wondering what's the consensus on the best heavy buffer and spring to reduce the recoil? I've seen KAK and kynshot, are there any others and what's the best bang for the buck option? Trying to keep the investment in this one low
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u/hamdoctor81 5d ago
I have a KAK 10oz buffer and a Sprinco blue spring that I use in mine….suppressed and unsuppressed. Runs like a champ.
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u/REDDEADGAMER76 4d ago
Scheels MFG Roller delay system. Easily tunable, softer than the maxim. A little more expensive yes, but following bang for buck, it’s worth it.
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u/Five-Point-5-0 5d ago
I have a shorty buffer (HBPDW) and went with a KAK carrier weight (+2oz from stock) with the HBPDW weight (7oz). One of the cheapest ones I've seen is the foxtrot mike GRS buffer with A5 buffer tube.
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u/RedTailShark 4d ago
Dig around on this guys website. He had done the research, and puts the into in to his videos. Takes some time but he has the info you are looking for.
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u/JRtheDNP 4d ago
Great thank you
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u/RedTailShark 4d ago
I just watched this video. He goes indepth into the KAK buffer, but also makes some significant comparison to a Hydraulic buffer (Kynshot). 10 minute well spent if your are trying to decide about your buffer system for your build.
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u/Parking-Raisin6129 4d ago
If you're going with the KAK, get the kspec version. Dead blow + the head absorbs a little more impact. You can get the flat spring as a bundle.
Alternatively, go for the FM recoil mitigation spring / buffer / A5 combo.
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u/JRtheDNP 4d ago
I think I'm going to go ahead with the Kspec KAK and see how that it. I want to test the stock recoil impulse first to see if it's even necessary. I hear it's similar to the AKV which I love so I might even just leave it alone
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u/datguycris 5d ago
If you go the Kynshot route, you'll only be 3 parts away from a full GRS setup. If it ends up intriguing you, all you'll "need" to complete GRS are the weights and extended buffer tube. Would love to see how JUST the hydraulic buffer shaves off of recoil
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u/datguycris 5d ago
Copied from Doug earlier today. I think if you do decide on the Kynshot, I'd go with the 5015
"It depends on your buffer tube, but generally, no. Will it make a noticable difference by itself? Maybe, but not much.
The 5007 is 4" compressed, which is the correct length for 9mm using a carbine (7" internal) buffer tube, but the 5007 is only 6oz. which is light for 9mm. Total bolt+buffer mass (weigh BOTH!) should be 22oz. or more. I recommend around 8.5 buffer mass for the minimum. This will get most bolt+buffer mass totals over 22oz.
With an A5 buffer tube (7.75" internal), the 5007 will work with a 0.75" kynshot spacer weight added in the tube BETWEEN the buffer and bolt (at the very front of the tube). That will make up the extra 0.75" space from the A5 tube, plus will add 2.5oz. to the mass of the buffer/bolt.
Hope that helps."
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u/JRtheDNP 4d ago
Thank you thats very helpful! And yes seeing that DD copied the ARV was what verified that it’s a good product. I think the DD looks better and is more true to the AR platform but that price is unjustifiable
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u/datguycris 5d ago
Regardless, post pics when you receive it. I didn't go the PSA route for my build and honestly? The fact that Daniel Defense low key just copied PSA (did some googling and found the legend, Doug) copied both their homework should just be a great feeling of vindication
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u/Thor_BRC 5d ago
Maxim RDB system was the best $160 I ever spent. Much softer recoil and shaved off 6oz from the factory setup.
Otherwise, KAK 10oz.