+ 1 for Sionics. They’re awesome.
(I wish Mr. Larsen was still here ...)
I have the 14.5 now, The 11.5 would be a winter project. I would probably buy a SR15 pistol lower from NS Defense in the next month or two. They sell it with the SBA3 instead of the SOPMOD for the same price as a standard complete SR15 lower. Then come income tax return time I would probably buy the 11.5 upper and Finnish the project. The SR 25 would be done over the course of next year...
Kelly Enterprises sells the whole 11.5 with SBA3 for around 2500. I have seen them recommended here but have never used them. Seems like a pretty decent deal. I am very supportive of your KAC decisions, and the 11.5 I think you'll love. They handle amazingly well.
https://www.kellyenterprises.net/kni...ce-detail.html
I'd say buy.
I have a BCM 14.5" pinned/welded, socom bbl. Love it.
Also picked up a PSA 11.5" upper for $229 with BCG/CH. It's sweet.
https://palmettostatearmory.com/psa-...ng-handle.html
There is something for every budget, and I have a few PSA uppers that run just fine.
Here's a pic of my 11.5"...(just trying to help...grin).
https://i.imgur.com/fFDxkn6.jpg
And the 14.5" P/W,
https://i.imgur.com/mU1nPsB.jpg
You say “redundant” like it’s a bad thing...