Update 12/14/2016 It has taken a lot of time to get my other replica parts imported. This is however done, so tonight I could testfit everything, on an Evike 100MM silencer you really do need the self tapping screws to fasten the mock supressor. But I think it looks really nice. Note: the grip is a side offset, as there is NO space for a lower RIS.
This piece can be used to fasten onto an already bought silencer/suppressor. The silencer must have a 30mm outer diameter (fairly common) and a minimal length of 10cm. It was designed to go over a 15 cm silencer, but a 19 cm silencer would also be fully covered. This a non functional "heatsink" piece. Purely for looks. It slides over the supressor and can be tightened by some self tapping M2 screws until it hits the silencer on both sides. (Cosmetic scratch marks on the silencer are to be expected.)
I designed this for my Krytac LMG enhanced, to fit WITHIN the handguard. It follows the same profile as well. Replace the longer external barrel with a PDW barrel (5 inch) and add a 15cm silencer, than put this Monoblock over it and it should give you a very integrated look. This way you can also keep the stock inner barrelI. I think this will also look excellent on some sub machine gun replica's like the UMP45 and the soon to be (re)released Kriss Vector.
Update 26/11/2016: This prints pretty much perfect in black strong and flexible. You really need to go extremely up close to see the terrace layering. (I really dislike the layering, so I was surprised with the quality.) It has an extremely matte look. I tested with a 150mmx30mm silencer and it does go in, but it's pretty tight, you might not even need to fasten it. Another 110x30mm silencer is under way (Evike) I will test that one as well.
It also does perfectly fit inside the krytac LMG handguard but keep in mind that the lower part of the handguard has to be detached. (That was the plan anyway.) Pictures on how that looks soon.
Logical, but just a disclaimer: Not designed for real firearms use!