Tyranid Termagants with Stranglewebs

I've converted some Tyranid Termagants to have Stranglewebs, since there are no current models of them. The conversion was pretty simple. I started with a Termagant with a Fleshborer. I removed the ammo magazine part and replaced it with two large Carnifex Toxin Sacs glued together back to back. I extended the barrel with the carved down base of a Woodland Scenics tree trunk. You can read more about those trees in this post. I capped off the end of the barrel with half of the round piece from the bottom of some old Fantasy Chaos Warrior plastic weapons. Here are the results.

I think they turned out pretty well, though I need to fill that little gap between the end of the Fleshborer barrel and the tree trunk piece. I'm also considering putting a thin layer of greenstuff over the round part at the end, and poking some divots into with a pin, since there should be some holes where the stuff comes out. Then again, maybe I could just paint that on. I haven't decided yet, so if you have an opinion please let me know.