Well this in not exactly in the technical realm - but it is a project of sorts with some techincal issues.
I've used (work) and owned (personally) a few Grenade launchers. The Colt/Diemaco M203/A1 being the majority -- however I was always annoyed with the fact that longer rounds could not be used nor could you use a bipod while one was affixed.
I started playing around with concepts - after down at KAC when they where still in Vero - I saw the URX and KAC's version of the EGLM.
I have no idea where KAC is at the momement on the RISII or EGLM project - but I mave had a URXII for a few years (and a few more URXII/III's now too
) and I have obtained a Hk AGL amongst some other toys.
Interestingly enough the AGL has a bracket for a midlength bayoney lug - and can affix that way (with the URX it is not possible to fit using the RAS bracket and a little bbl nut bridge is needed) -- which loses the FF abiliity anyway.
Fortunately a buddy of mine is a talented machinist and has designed a URX GL adaptor for another GL system (read: Diemaco's gayass M203A1 mount)
The idea to be able to keep the FF with the GL affixed (nothing terribly new since RISII/MDNS required it)
However with the Hk AGL - it is possible to affix a bipod or grip to the frame of the GL not interfering with the GL or the FF ability of the rail etc.
The idea is that one member can have a entry upper, a GP carbine and a DM upper - all on the same lower - use the same GL if nec.
Additionally the use of a BOTB suppressor can provide a very small package.
I hope within the end of Sept to have the three systems in 6.8 with a demo.