I've been reading it a lot, and noticed some errors and logical or reality problems.
1. Our old good sniper rifle. 20mm caliber, that is totally weird. 20mm antimateriel rifles exists, but only few, and firing one from standing or crouching position is downright impossible. Judging by performance in game, I'd say its caliber is probably .338 Lapua, it isn't powerful enough to be .50 BMG.
2. I know it's probably too late to change, but operation of M/AM engines as described in game is unworkable. Rocket/jet engines operate on classical action-reaction basis-high velocity mass goes one way, plane goes the other way. But M/AM anhillation produces no mattter, just energy. There is almost nothing to push the craft. The best solution for this would probably be mentioning that there is additional fuel, some dense gas, and antiprotons are injected into the stream of this, creating a high temperature plasma stream capable of propelling the craft. If you just use some common gas, all that would be needed is to change some entries and it's fixed.
3. Why does frag grenade description states it has smooth surface and model looks like pineapple type?
4. Another caliber rant, 25mm grenades for GL? Oh come on, even underbarrel launchers today use 40mm. 25 mm grenades are kind of "hybrids" between normal ammunition and grenades, sacrificing power for range...and ingame GL is nowhere near long range.
5. UFOpaedia clearly overestimates the weight of plasma blaster. If it is supposed to be a weapon useable by, although only some, human soldiers, it can't weigh more than average human can take on a cart.....
Well. I might add more as I notice them....