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Questions & Answers
will this work in a standard ar15 carbine buffer tube AI Answer

Yes, this is a carbine length buffer (4 inches) designed to fit a standard AR carbine buffer tube, but it is weighted specifically for AR-9mm builds rather than standard 5.56/.223 carbines.

by OpticsPlanet AI, October 12, 2026
Will this work run with minor issue in an ar45 platform? And if so what spring? Manufacturer Answer

I am not sure if it works with AR45 platform.

by Charles Shi, Manufacturer, July 22, 2026
Customer Reviews
Helpful Negative Review
this is pure garbage by vical, Verified Owner, April 11, 2026
was very exited to get this on my rock river 9mm PCC but After 50 round I noticed the charging handle was very difficult to pull back I got the buffer out and the plastic was disintegrated
2/2 found this helpful
Most Recent Reviews
Paired this with a kaw valley pistol caliber spring in warscorp9 and runs smooth. Recoil really light now but might need to upgrade to 10oz with reciprocating weights when suppressed and frt to avoid bolt bounce. will have to try soon
1/1 found this helpful
Most Recent Reviews
Top quality by Tdog, Verified Owner, August 11, 2026
Great projects at a great price the buffers worked perfectly in my ar pistol
Most Recent Reviews
i wish the description was better by David Lahham, Verified Owner, June 24, 2026
No where did it state this was a solid weight buffer. Now i know i can return it. But i need to find a replacement first.
Most Recent Reviews
Solid buffer not for Force reset triggers. by Rdanger., Verified Owner, March 3, 2026
The buffer is solid do not use with force reset triggers. You will get bolt bounce with this buffer and can cause out of battery detonation. If you are going to do a high rate of fire you need a dead blow buffer. It's a nice looking buffer and functi...
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2/2 found this helpful
Most Recent Reviews
Just what i needed by Troy Richardson, Verified Owner, March 29, 2026
Got this for Ar 45 build. Was just what I needed and price and shipping was great
Read All 11 Reviews
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Product Info for Kexuan 9mm Extended Length Buffer

This carbine length steel buffer is designed with extra weight and length for the AR-9mm.image

Specifications for Kexuan 9mm Extended Length Buffer:

Manufacturer: Kexuan
Fabric/Material: Steel
Length: 4 in
Condition: New

Features of Kexuan 9mm Extended Length Buffer

  • Precision Machined from Premium Aircraft Grade Aluminum

Package Contents:

  • Kexuan 9mm Extended Length Buffer

Kexuan 9mm Extended Length Buffer Orderable Models

List of Orderable Models

  • Kexuan 9mm Extended Length Buffer, 8 oz, 4 in, Steel, Dacromet, Black, ASBF21 , MPN: ASBF21 , UPC: 840354133401 , Code: 4IG-RBF-PRSM27-ASBF21
  • Kexuan 9mm Extended Length Buffer, 6.5 oz, 4 in, Black, ASBF16 , MPN: ASBF16 , UPC: 840354130356 , Code: 4IG-RBF-PRSM27-ASBF16
  • Kexuan 9mm Extended Length Buffer, 8 oz, 4 in, Stainless Steel, Silver, ASBF20 , MPN: ASBF20 , UPC: 840354131018 , Code: 4IG-RBF-PRSM27-ASBF20
  • Kexuan 9mm Extended Length Buffer, 6 oz, 4 in Long,Stainless Steel, Silver, ASBF18 , MPN: ASBF18 , UPC: 840354130998 , Code: 4IG-RBF-PRSM27-ASBF18
  • Kexuan 9mm Extended Length Buffer, 7oz, 4 in, Stainless Steel, Silver, ASBF19 , MPN: ASBF19 , UPC: 840354131001 , Code: 4IG-RBF-PRSM27-ASBF19

Kexuan 9mm Extended Length Buffer Unavailable & Discontinued Models

List of Unorderable Models

  • USED, Kexuan 9mm Extended Length Buffer, 6.5 oz, 4 in, Black, ASBF16 , MPN: ASBF16-EDEMO , Code: 4IG-RBF-PRSM27-ASBF16-EDEMO-RE-C
  • USED, Kexuan 9mm Extended Length Buffer, 8 oz, 4 in, Steel, Dacromet, Black, ASBF21 , MPN: ASBF21-EDEMO , Code: 4IG-RBF-PRSM27-ASBF21-EDEMO-RE-B
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Last updated 2026-11-06 UTC.