j-dewd
I've stopped using mag release buttons long time ago. Mostly because people can't use them. They usually drag the mags out even if there is mag release button. And I know about the breaking mechanism.
DualDesertEagle
About glock 18, many people asked about it in comments, and I can tell you I won't make one. Only glock I have ever made was glock 36, and its not posted anywhere. And your lego gun - I think its very nice, especially with moving bolt and attached grenade launcher.
Well, I wont give you any tips here, since this place is for comments, not for conversations. Just contact me through Xfire or Steam.
Steam id: Yuras12
Xfire id: Yuras121212
Same problem as with Poprocks's modification. Move the scope and picatinny rail to the back layer, so it won't cover up spent cases flying out of the weapon.
Clip of the first M16 (M16a1) held 20 rounds. And burst function is applied only in M16a2 and M16a4 (M16a1 was used in vietnam, and it had only semi and full auto firing modes). Thats why US military moved from M16a2 straight to M16a4, and skipped the M16a3.