Things I liked:Really, it is so hard to find .12g BBs that are Biodegradable. These are the only weight BBs that fire well from my Electric Blow Back sidearm. For me these were a must because the group I play with requires that Biodegradable BBs be used on their fields. Things I would have changed:Shipping price was a bit high for 1 pack of BBs. I ended up paying more for the shipping than I did for the BBs. However, like I said this purchase was a must for me and it's very hard to find .12g Bios in stock anywhere. What others should know:.12g BBs will commonly be for pistol, light sub-machine gun, or other CQC type weapons. They will not fly nearly as far or as fast as heavier BBs, so generally speaking you are better off with .20g or .25g BBs for your primary weapon/AEG.
Things I liked:This is a re-evaluation of my last review (by Joe) before I received the product. I have now received the product and am less satisfied with it. Things I would have changed:These BBs are NOT precision BBs, meaning their size varies more than Precision BBs and that they are not as perfectly smooth. I compared these .12 bios with .12 precision BBs from Tokyo Marui and noticed the following: There is a noticeable line in the BBs where the two halves come together and a small bump on every BB. Aside from the lack of smoothness, these BBs are not lubricated in any way (which might have made up for the small bump and line).
I test fired a full clip of these .12g Bio BBs and my .12g precision BBs side by side. I used an Electric Blow Back pistol that only works well with .12 BBs. These Bio BBs did not exit the gun smoothly and did not go very far at all while the TM precision BBs flew farther and straighter.
While I'm not a huge expert on BBs, I believe that these BBs are not exiting properly because of their lack of smoothness and lubricant. Prolonged use of these BBs may damage certain AEGs. What others should know:I was very disappointed that the product didn't work well, .12g BBs that Biodegrade are near impossible to find. I will not be using this product because the performance of the BBs are horrible and I feel that they may cause damage over time to my airsoft gun.