Mine arrived a week or so ago. I like it for what it is, as I have severe needle anxiety when it comes to IM shots. I can take them fine, but struggle mightily doing them myself.
As for the unit, it injects slowly. Not hammering it in. I use a 3cc syringe and a 23g 1.5” needle. I can’t put more than 2.7cc in or it doesn’t fit inside the unit. May be my syringes, I can’t say for sure. Have had zero issues shooting test, Deca, or Large volumes of L carnitine. All goes in, nothing left, no leakage. It doesn’t automatically retract sometimes, but that’s a very minor issue for me.