Home AR-15 A True AR-15 Upgrade: The A5 Buffer System

A True AR-15 Upgrade: The A5 Buffer System

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A lot of rifle upgrades are gimmicks, but the A5 buffer system isn’t one of them. If you have any doubts, Mike explains what the system is, how it works, and why it’s so good SOLGW uses it in ALL of their rifles. And the best part? It’s an easy upgrade that you can make to your own rifle.

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0:00 – Intro
0:18 – A5 System Explained
0:49 – Benefits of the A5 System
1:39 – AR-15 Cycle of Operations
2:14 – What Does More Mass Do?
3:47 – Why Not Just Use A Heavier Buffer?
4:54 – Which SOLGW Rifles Use the A5?
5:29 – Where to Get Yours

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38 COMMENTS

  1. QUESTION: I'm impressed with the AR system and considering installing it on my LWRC DI 11.5 (running suppressed w/ a B&T Rotex-X 5.56 suppressor). Here are a couple elements with my current setup that make me wonder if I should get the entire A5 system or is my enhanced spring and Spike's T2 Buffer good to use with just upgrading to your A5 tube?

    1. Swapped my spring and bolt with a Bexar Gen 2 flat enhanced length spring and a Spike's Tactical T2 Hvy Tungsten Buffer.
    2. Installed the Law Tactical Gen. 3 Folding Stock Adapter (adding a little length to the BCG travel)

  2. Just bought an A5. Hopefully it goes well with my PSA KS-47. Been having trouble with the bolt outrunning the magazine so hopefully this fixes up the issues with it AND give it a smoother feel.

  3. The A5 system will absolutely work in fixing gassing issues. I have an Aero M5 6.5 creedmoor 24" rifle. It wouldn't cycle with an AR10 carbine buffer (3.8 oz), and you can't go lighter than 3.8 oz. I swapped to the A5 buffer system with an AR-15 carbine buffer (3.0 oz) and the rifle cycled. Opening the operational window with a wider range of buffer weights (in this case, going lighter) helped fixed issues.

  4. Been running an a5 system since early 2014. Not great for full auto rof but everyone that shot my gun (no matter what barrel length) has been impressed by how smooth, consistent, and low recoil it shot.

  5. nah I run a low mass bcg with an armaspec H3 is the goated setup so long as you have an adjustable block. Its been awesome and the weight is moved rearward balancing the whole thing out.

  6. Being far from an expert on firearms but still enthusiastic, how would this affect my 11.5" suppressed SBR? I have an adjustable gas block and tuned to the suppressor so spent cartridges are ejecting around the 3 or 4'o'clock position. I was thinking about getting a Silent Captured Spring but I'm not sure what would be more useful, or if I should even bother using anything other than the factory buffer and springer. I also thought about getting a different BCG as well, something like a KAK with the downvents/dual ejector. The BCG is factory as well. It's a SIG M400 Tread Pistol turned SBR.

  7. I put it on all my rifles. I knew i was right about the A5 even when others were starting to doubt it.
    I could feel the difference in some cases. Makes it feel like a sewing machine

  8. A5H2, springco green, LMT ebcg, with a 16" barrel. Super soft shooting rifle, and will cycle everything from 55gr .223 to 77gr 5.56. I pair a Geissele airborne handle with it, too, which, combined with the EBCG, results in no gas in your face. It runs well with an A5H3 as well, but I like to know the rifle will run in more adverse conditions.

  9. A5 system is basically a scam. The benefit is so negligible especially in comparison to it's cost in addition length on wrong side of the gun(any additional or less length is a balancing act done on barrel for the use of the rifle/ar-pistol) and cost in USD. You will not see any engineering paper explaining this because spring engineering is quite complicated for such seemly simple concept. The A5 system is also not efficient repair/response/solution to any rifle issue you have which can be pinpointed at the cause, the gas port size, bad chamber, bad headspace, out of spec parts, etc.

    There is no scientific video on A5 system for a reason.

    Don't be a gullible sucker. Also green spring or is worse piece of shit weak ass spring springCO ever made. It's a embarrassment for such reputable manufacture. The extra power spring they make is amazing if you have the gas port to run it.

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