Yes, there is such an animal.
Knight's offered these in three lengths:
1) Carbine: same length as what you're use to.
2) Rifle: see above. This is the same unit installed on the SR-15 Match, SR-25 Match, and Mk11 Mod 0 rifles.
3) Medium: longer than carbine, shorter than rifle. This RAS requires the installation of a "low-profile" gas block (available from KAC). You will also need a flip-up front sight if you want to use irons with this set-up.
I have some photos from a Knight's catalog I can email to you if you like... Let me know.
[email protected]As far as availability: These were not made in large production runs. Only a few made it to the civilian market as accessories. Price runs from $450 for the carbine to $525 for the rifle (lo-pro gas block: add $75+/-). The only vendors to have them were:
Wes Grant, MSTN:
[email protected] 901-854-7497
And Dennis Todd, whose info I don't have in front of me, but can find it later, or maybe someone else can post it for you.
Happy (fully accessorized) hunting,
havoc