Read up on the kits, and I would suggest not getting the lock or the triggers inlet, if they aren't in exactly the right spot you're in for a time fixing it and as a rookie I can attest to the difficulty of figuring out what is wrong, why it's wrong and what to do to fix it. Putting them in the right place to begin with is easier and faster in my opinion, again as a rookie. Having the stock shaped and barrel inlet I would suggest doing, massaging them isn't too difficult.