Order for a black and a brass SQ Mecanic style mechanical mod.They are made very well.The magnetic firing button is soft and short throw. It does not press from the center. More of a side button throw and it will work flawlessly.Had to get use to that but after orientation to the button press. Taking the button apart is really like no other mod I have seen. It is kind of hard to get the upper magnet to stay in place while doing the assembly. First 3 times I did it I got a hard short and the mod auto fired. After getting it right everything works as it should. I will be looking for a spring to try. I am thinking it may be alot easier to use. The magnets are so small and seem a touch weak. It would not be able to resist auto firing in a pocket unless you backed out the battery adjuster. The weight of the mod alone will press in the button.One of mine was missing the insulating o-ring in the battery adjuster. Thank goodness it had a spare in the package.The top 510 has a o-ring in the cap. One I got had this o-ring loose. Might have to use a touch of glue if it comes out again.The threads are perfect in every way.The machining is spot on.The paint on the black is a nice satin black. Very nice and seems to be holding up well so far.For a 21700 mod, This thing really works nice. I love the ability to use alot of battery sizes. Especially the 20650 batteries.It is a very small 21700 mod. Its smaller than alot of 18650 mech mods for sure.Nice design and well made by ShenRay.I do find this mod likes a 0.2 ohm or higher build. I tried a 0.13 ohm build and it seems to get hot at the button very easy. The original says to run a 0.3 ohm or higher and I would say that would also be good for this one as well. I am currently running a B2K rda with a 0.28 ohm build and getting perfect performance and a great vape.I am very happy with my purchase. Both mods are very nice, light and work great for what I wanted them for.Thank you Hotecig for the quick shipping and great deal during this promotion.