Everyone is saying to use a heavier buffer and sounds like nobody knows how an AR works. But if it isn't cycling subs, you may have a different issue. Only use a heavier buffer if there's too much gas, to slow down the cyclic rate. I don't have one but someone said it's 3oz. That's a carbine buffer. Try a sprinco yellow spring (its a little under powered compared to other springs). Sounds like it's not getting enough gas which could be gas port size, gas block not being aligned or too the spring is too strong or buffer too heavy. Assuming the gas system is aligned correctly, adjust the spring tension.
The Gear Head Works Tailhook Mod 1 Pistol Stabilizing Brace at the link below should work with the Aero Precision AR15/M4 Enhanced Pistol Buffer Kit.
https://www.opticsplanet.com/gear-head-works-tailhook-mod-1-compact-pistol-stabilizing-brace.html
The manufacturer doesn't specify the length of the Aero Precision AR15/M4 Enhanced Pistol Buffer Kit Buffer Tube. I recommend contacting the manufacturer in regards to that information.
Yes, the Aero Precision AR15/M4 Enhanced Pistol Buffer Kit should work. Email us at techsales@opticsplanet.com for more information.
The buffer tube is ~7.2" long.
The KAK Shockwave Blade is only compatible with the proprietary KAK Shockwave pistol buffer tube.
That is the length of the buffer, the exact length of the buffer tube is not provided by the manufacturer.
No, the SBA3 uses a standard adjustable buffer tube and will not work with a pistol buffer tube like this.
No, the SBA3 and SBA4 use standard adjustable mil-spec carbine buffer tubes.
They state it to be 1.20 o.d. Recommend a heat gun for a composite brace if you end up too tight. If too loose... good luck.