Yep... I have a 14.5 Middy that has an .080" port... as opposed to the .076" that comes on a BCM.
So the -1 might be just right.
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Yep... I have a 14.5 Middy that has an .080" port... as opposed to the .076" that comes on a BCM.
So the -1 might be just right.
Even with the standard A5 my BCM 14.5" mid ran well, it just felt sluggish. I rarely run junk ammo, so it wasn't a concern. One time when Matt (Munch520) came down, we had some failures with Tula, or something similar. But, that was expected.
Swapping the buffer in the A5 to a -1 did the trick. But, in the end, a carbine RE with an H buffer just felt more solid. I wouldn't hesitate to run the BCM with the -1 A5 though if I needed to for some reason.
I know what you mean exactly. I've gone through all these stages with various guns. The slightly larger port on this Sabre barrel may just be perfect. I can't wait til tomorrow to shoot the sucker.
I just go to the Vltor website and get the weights right from there. FWIW- I have a BCM/6920 hybrid that markm has shot and it has a -3 buffer and green Sprinco spring and it runs perfect. I have used several different ammo types thus far.
Midway lists the buffer weights in a sensible manner and clarifies that the H2 is the standard. I think if VLTOR marked them as H(#) instead of this "-" crap.. us simple folk wouldn't get all flustered.
Combine that minus crap with the fact that none of the buffer kits I've bought are marked at all, and it's a herd of turtles.
Jon, how do you think an SR15 would run on the A5H1?
The "-" is what confused me. I've never seen the other buffers, only the standard one, I didn't know how they were marked.
I've been running a Noveske 10.5" switchblock upper w/ A5H4, Sprinco green spring, and LMT enhanced carrier since August. Exceptionally light recoil but doesn't feel too sluggish. Cycles XM193, MK318, FBIT3, MK262, Prvi, ADI, AE223, Tula, Wolf, and various reloads without issue, even when filthy. Difference in recoil is almost unnoticeable between 5.56 and .223 loads which I really like.
Some batches of PMC Bronze have short stroked like gangbusters though. I swap down to an A5H3 if I have a shit ton of that and it cycles fine.
ETA: Can you buy the H0 and H1 variants?......Nevermind, answered my own question...I didn't realize they were available commercially...
I recently changed my patrol setup to an H4 buffer and the std Vltor spring up from the H3 and the Springco Green. I found that shooting pairs using XM193 offhand at 50 yards was slightly faster using the heavier H4 buffer and 'lighter' Vltor factory A5 spring than with that same buffer and the Springco or the H3 and the Springco. I had slightly less muzzle movement on the return-to-battery stroke with the heavier buffer and lighter spring. Emphasis on the "slight" difference. If somebody doesn't train often, I doubt they would notice the difference since both are so much smoother than a carbine setup.
The wifebag runs her PSA 14.7" CHF middy with the H3 buffer and Springco green spring and prefers that to the H4/Vltor spring in her gun.