Hi guys,
Got a G&P pulse rifle kit at Xmas, and have been delightedly tinkering away for months! All's well, except for one thing... One of my metal shroud panels has either gone missing or was never in the kit in the first place

Now, I'm perfectly prepared to admit I may have lost the blooming thing, but it's the last piece I need to complete the rifle, and the company I bought it from won't sell me the missing part.
I'm kinda heartbroken, to be honest!
Anyone know where I can get one? It's this bit with the hex key in it
http://www.medwaypvb.pwp.blueyonder.co.uk/images/pulse/CIMG2632b.JPG, kindly borrowed from medwaypvb's site. If anyone has any suggestions, I'd be *extremely* grateful!!!!