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What weight buffer would I use for a AR-15 7 and 1/2 inch barrel I am having a cycling problem , thanks — 3 Answers

by GOTSIGS, from GA, United States Asked on January 15, 2020

Name Tacfire Recoil Buffer (4.5)
As Low As $12.99 Save Up to 18%
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Answered by Ethan C., Gear Expert, from IL, United States, on February 14, 2020

The heavy buffer weight, MAR044, should work best for you.

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A
Answered by Pyroking, member, from IL, United States, on April 10, 2022

The people answering these buffer weight questions don't know what they are talking about. If your gun is short-stroking, not locking back on an empty mag, then you are under-gassed and need to increase gas or DECREASE buffer or BCG weight. You have to test and tune DI guns. Every gun is different. Anyone claiming to know the proper buffer weight just by the barrel length has no idea what they're talking about.

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Answered by Pyroking, member, from IL, United States, on April 10, 2022

The people answering these buffer weight questions don't know what they are talking about. If your gun is short-stroking, not locking back on an empty mag, then you are under-gassed and need to increase gas or DECREASE buffer or BCG weight. You have to test and tune DI guns. Every gun is different. Anyone claiming to know the proper buffer weight just by the barrel length has no idea what they're talking about.

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Last updated 2025-11-12 UTC.