Hi,
Not my gun, but the mods were done by my brother;
TOP Minimi Para with GB-Tech stock, CA Gearbox from their 249 and a mod exclusive to the British Army - a SUSAT, as seen on the L85/6 Series - which uses a 19mm rail, as opposed to the usual 20mm, mounted on the top cover.
My brother used CAD to design the 19mm rail and machined one out from scratch. We then mounted the SUSAT.
The person it was made for is a member of the Parachute Regiment and also an avid airsofter, and wanted a degree of authenticity to his rifle, by adding the sight and mimicking the rifle that he uses in the real world
