Would not recommend for armasight spark core - Armasight Night Vision Scope Adapter Mount for Spark/Nyx-14 Monoculars

2 stars because it’s well made. I have ordered from optics planet before and no issues. But not this time. Took 4 weeks. I ordered this for my Armasight Spark core. Same part number as my manual. Says fits Spark in description. It attaches to the rails just fine. But, no matter which rail I put it on, it will not line up correctly on center. It did come with all the scope size adapters and seems well made. I would return it, but I am tired of waiting on opticsplanet to go through the hassle of returning. I am a machinist and now I will just build a .160 taller rail, or a .160 thick spacer. That is how far it is off center. Doesn’t sound like much, but when trying to line night vision with a scope it needs to be pretty much perfect.