I can get to all the mods before apocalypse armory, the apocalypse armory.esm works with the other mods just not the rest of the apocalypse mods, and fallout 3 will crash.

* fallout3.esm
* anchorage.esm
* thepitt.esm
* brokensteel.esm
* pointlookout.esm
* zeta.esm
* unofficial fallout 3 patch.esm
* mart's mutant mod.esm
* enhanced weather - rain and snow.esm
* streetlights.esm
* dcinteriors_comboedition.esm
* rh_ironsights.esm
* rh_ironsights_basic_vanillaplugin.esp
* rh_ironsights_basic_anchorageplugin.esp
* rh_ironsights_basic_pittplugin.esp
* rh_ironsights_basic_brokensteelplugin.esp
* rh_ironsights_basic_pointlookoutplugin.esp
* rh_ironsights_basic_zetaplugin.esp
* rh_ironsights_pitt_newriflesights.esp
* rh_ironsights_pl_newitems.esp
* rh_ironsights_removereticule.esp
* eve.esm
* unofficial fallout 3 patch - operation anchorage.esp
* unofficial fallout 3 patch - the pitt.esp
* unofficial fallout 3 patch - broken steel.esp
* unofficial fallout 3 patch - point lookout.esp
* unofficial fallout 3 patch - mothership zeta.esp
* streetlights - wasteland.esp
* realistic interior lighting.esp
* realistic interior lighting - bs.esp
* realistic interior lighting - pl.esp
* mothership crew.esm
* apocalypse armory.esm
* apocalypse armory.esp *apocalypse armory - calibr.esp
* apocalypse armory - xcalibr.esp
* apocalypse armory - optional historical names.esp
* apocalypse armory - dlc enhancements.esp
* apocalypse armory + wmk.esp
* apocalypse armory + eve.esp
* realistic interior lighting - oa.esp
* fellout-pipboylight.esp
* dd - enhanced blood main.esp
* sprint mod.esp
* upp - pack 1.esp
* greenworld.esp
* upp - pack 2.esp
* overhead3pcamera.esp
* undergroundhideout.esp
* alton, il.esm
* merc_2.esp
* shogo_20mm_bozar.esp
* weaponmodkits.esp
* weaponmodkits - operationanchorage.esp
* weaponmodkits - thepitt.esp
* weaponmodkits - brokensteel.esp
* weaponmodkits - pointlookout.esp
* r18bodypack.esp
* weaponmodkits - zeta.esp
* sunglassescollection.esp
* eve.esp
* mart's mutant mod.esp
* mart's mutant mod - dlc anchorage.esp
* mart's mutant mod - dlc the pitt.esp
* mart's mutant mod - dlc broken steel.esp
* mart's mutant mod - dlc point lookout.esp
* mart's mutant mod - dlc zeta.esp
* mart's mutant mod - natural selection.esp
* mart's mutant mod - tougher traders.esp
* mart's mutant mod - zones respawn.esp
* mart's mutant mod - master menu module.esp
* enhanced weather - rain and snow in fallout.esp
* enhanced weather - reboot.esp
* enhanced weather - radioactive rain and snow plugin.esp
* enhanced weather - weather sounds in interiors.esp
* enhanced weather - sneak bonus during storms.esp
* fellout-full.esp
* fellout-anchorage.esp
* fellout-brokensteel.esp
* fellout-pointlookout.esp
* fellout-zeta.esp
* megalight.esp

I crashes when you launch the game or in game ?

You could use a tool like FO3edit and check the .esms to see if apocalypse modifies somehing already modified by another .esm
If so, the .esp using the wrong ref will crash the game.

I found it was r18bodypack and the two AA caliber and xcalibr that come with AA.

Google search : R18bodypack is a pack of the T3 type bodymods replacer in FOMOD..... Well, nevermind.

I was intrigued why a bodyreplacer comes with an .esp, so I unzipped the FOMOD and there is no .esp. How can it conflict with a weapon mod ?