None Lucky is the only company to make a full body.
Black Ion with Clippard QEV, stiffi barrel, Lucky stage 1 bolt, Lucky stage 2 firing chamber, stage 5 body and 1 of 1 Element 85* frame,FBM stilleto Drop and VP Scythe trigger.
Ease of bolt removal and overall quality of a full aluminum body.
The stage 5 is amazing. For now there are only 99 but if you ever see one for sale pick it up. Bolt access is a snap simply remove the endcap and the bolt and bolt stop come right out! The fit and finish is perfect there are no flaws whatsoever. If there is a second run or a body made by another company licensed by Lucky buy it. it makes the Ion feel and look like a high quality highend marker.
Buy it if you ever can. it is the only real body for the Ion.
The funny thing is that you don't have a Stage 5 because your set up says you have a Stage 2 well it just so happens that you cant have a Stage 2 in a Stage 5 because it already has it built in and don't use the excuse that you just said that because it has a Stage 2 built in because if you put that you would have Stage 3 too... This review should be deleted because this kid does not even own a Stage 5.