Thanks, but I have heard that the silicone bucking wears out fast and that the fins sometimes break.
The reviews on the systema bucking are good and should I use the spacer it comes with or the one already in the gun?
I'm looking for a cheap ,but effective bucking and the Systema one fits the bill.
Also, this is just one part of my plan to retrofit my M4 and I'm buying a few other things from hot spot airsoft so I don't want to buy from other websites/stores. (no shipping charges)
Also, will this fit on a Madbull 6.03 TB?