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Reviews & Ratings for Kaw Valley Precision Stainless Steel Heavy Tungsten Buffer — 49 reviews

(49 reviews)
Kaw Valley Precision Stainless Steel Heavy Tungsten Buffer
Kaw Valley Precision Stainless Steel Heavy Tungsten Buffer
$109.95 $99.95 Save $10.00
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Most Helpful Positive Review Works great for AR-9 builds
I purchased this buffer after a lot of research into building/tuning a 9mm AR-platform pistol/carbine. Since they operate on direct blowback, it is important to adjust your total reciprocating mass to reduce felt recoil, ensure proper cycling, prevent undue wear on the system, and (most importantly) delay blowback long enough for pressure in the system to drop to safe levels. As such, I was specifically looking for an extended (~4 inch) buffer with internal sliding weights, and the KVP-10oz meets both criteria. The specific buffer I received weighed in at 10.25 oz which, combined with my 14.4...
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Perfect. Highly recommend for your 9mm build

by Isaac, Verified Owner from TX, United States Written on June 10, 2026
Made my 9 run perfect. I've seen where some trim the bumper pad a bit but mine ran fine with zero modifications. Clearance with LRBHO was exact. Using a standard flat wire spring.
Would recommend: Yes
Was it helpful to you? Yes | No
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I hate to say it, but it’s the only one. 10oz. Kaw valley

by SKYNETUP, Verified Owner from UT, United States Written on June 6, 2026
I hate to say it, but it is the only one that worked. I’m in business. I would say ( (expensive )but it’s the only one that works. Springs are a big factor, but the buffer weigh is necessary. With the movable weights inside.
Pros:
  • Movable weights inside
Cons:
  • price
Best Used for:
  • 9mm PCC
  • 9mm PCC builds
Would recommend: Yes
Was it helpful to you? Yes | No
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10oz buffer

by birddog, Verified Owner from VA, United States Written on May 26, 2026
This is a great buffer with moving weights inside. This should help my 9mm occ with bolt bounce and a solid lock up. Quality appears to be first rate with no noticeable flaws.
Would recommend: Yes
Was it helpful to you? Yes | No
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Kaw Valley Precision Stainless Steel Heavy Tungston Buffer 10oz

by JOHN R, Verified Owner from OH, United States Written on May 21, 2026
I purchased this for my 9mm AR9 Pistol and it works perfectly.
Would recommend: Yes
Was it helpful to you? Yes | No
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PCC FRT NEED

by FunnyRiverRed, Verified Owner from AK, United States Written on May 19, 2026
This solved all my feeding and bolt bounce issues for my 9mm PCC running FRTs
Would recommend: Yes
Was it helpful to you? Yes | No
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best 9mm pcc buffer

by Dub, Verified Owner from LA, United States Written on May 19, 2026
Works flawless in my 9mm carbine with 6 in barrel. Optics Planet has the best price for this item, especially with free shipping. Arrived within 5 days of ordering
Would recommend: Yes
Was it helpful to you? Yes | No
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Very satisfied

by Lingo, Verified Owner from MS, United States Written on May 13, 2026
Great product, works well in my Gforce jawbone with the partisans drop in
Pros:
  • Great product and it delivered fast
Cons:
  • None
Best Used for:
  • Running frt or ss
Would recommend: Yes
Was it helpful to you? Yes | No
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Depends on what you're looking for

by VegasViking, Verified Owner from NV, United States Written on May 12, 2026
Good solid buffer.....that's the key. Its a solid steel buffer. If you're want/need a dead blow buffer, this is not it. If you're experiencing bolt bounce, this is most likely your problem.
Pros:
  • Heavy buffer
Cons:
  • Solid bugfer
Would recommend: Yes
Was it helpful to you? Yes | No
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Tungsten AR buffer weight

by M, Verified Owner from GA, United States Written on May 12, 2026
Ordered this for a AR9mm pcc upper and it’s what you’ll need to get to that combined 24oz bcg/buffer weight sweet spot. Makes for smooth recoil and cycling.
Pros:
  • Needed to get to that 24oz sweet spot
Cons:
  • Anything with tungsten is SPENDY
Best Used for:
  • AR 9mm Build
Would recommend: Yes
Was it helpful to you? Yes | No
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This is the one

by ThudDimadome, Verified Owner from CA, United States Written on May 11, 2026
Stop wasting your time with other brands and testing weights, the 10oz buffer weight is exactly what you need to get that custom AR9 build running. I have them on 3 different builds now
Would recommend: Yes
Was it helpful to you? Yes | No
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