Yep. All of mine have been run on 7.4 lipo's, in some cases for 100,000 rounds or more without a hitch. I haven't had a fuse in an AEG in well over 4 years without issue.
No longer looks like this(Is in pieces atm since I am contemplating on buying another mosfet since I failed horribly installing the first one) but ICS M4A1 with JBU TBB, JBU FF RAS and 416 sights. Btw Blackjack, did you dremel that Magpul MOE to fit on your ICS? I myself have an MOE grip but dremeled the heck out of it and it still doesn't fit correctly to the lower receiver )': .
The dboys 3 in 1 grenade launcher has three different mounts, which is what makes it 3 in one. IIRC, one barrel mount for TM, one for RIS, and another type of barrel mount for other barrels that aren't tm spec I think O: .
The RS version does fit the specific Glock models, specifically 17 and 19. Of course the price is much higher since it is made for RS and the quality is very nice, in the US, it cost around $300 or so. I do not know if Hera Arms sells to the UK but here is their vendor page on their website.
http://hera-arms.com/vendor.php