That antenna on top of it was lugged up there by me. It's going to be replaced with one twice that size soon. It's just stairs, no biggie. I'm thinking about redesigning the lookout portion to change the windows to a vertical swing instead of horizontal and bracing the structure to extend the...
I am absolutely sold on them now. I picked up a surefire hellfighter light for my M2HB and a mount a couple of months ago used. I sent it in because of power issue. (Used) It had a cloudy reflector and lens. But when I got it back for the other repair, they had replaced all of that as well...
Fun thing to note, FN had a recall on the early 249s for trigger issues. Apparently there was a certain area you could hang the trigger at where things got interesting.
Ooops, one more thing to consider. Build a MG42 of MG3, but chamber in 308. Those use AR FCG for the semi conversion. With some tinkering you might be able to finagle a binary in there if you can stand having a modified grip stick to have the AR style throw lever. Then play with the modified...
On another note, belt fed semis are boring. I think I'd only consider a AR with a binary trigger with a FM-9 or Flight Line upper if that's the case. The semi RPD uses a striker fire setup that doesn't lend to bump fire.
I've enjoyed all the RPDs I've built. I haven't had a chance to play with a 249 yet though. DSA receivers are great. Their barrels are absolute crap. At least two of them I built at the same time seemed to have no QC done on them externally. I've got one RPD parts kit I'm holding onto with...