Does anyone have experience with the A5 compatible buffers offered by Slash at HeavyBuffers.com? Do his A5 buffers include the internal spring that the genuine A5 buffers use? I looked on his site and it doesn't say. It just says they're A5 compatible, stainless steel, etc. IMO, the internal spring used in the genuine design serves a function, and I would like to retain it. His buffers are considerably more expensive, but with genuine Vltor buffers being difficult to find at times, I'm willing to pay the premium for alternative options. I appreciate any info you guys might have.

@Slash

I appreciate you taking the time to come here and reply.

Do you mind if I ask what kind of testing you've performed and why you include the elastomer spring in your buffers if this testing has indicated no difference between buffers with the spring and without it? Is it there to try and stay more inline with the original Vltor design?

Does the elastomer portion used inside your buffers simply apply forward pressure to the weights while still allowing them to move, or does it keep them permanently fixed in the forward position, preventing movement? In other words, do they still move rearward when the buffer impacts the rear of the receiver extension?

Also, while I've got you here, do you mind if I ask why you recommend using the Wolff extra power spring? I've always used Sprinco green springs in my A5 systems without issue, but considering you may have more experience in testing different combinations of parts, I'm wondering what lead to you recommend the Wolff spring.

Thanks. I'll stick with the green springs for now. They are what I've seen most all A5 users recommend in the old A5 threads here and especially on TOS, which is what originally led me to using them. They've been in several lowers/rifles for quite a few years now and a couple of the lowers have round counts well above the 10k mark and they've been excellent performers so far. Come to think of it, I've never seen anyone running the Wolff rifle spring that I can remember, but I'm sure it's a great piece, nonetheless. I do have a Wolff +15% spring in an SLR104FR and it's done its job well so far.