WHERE CAN I BUY A GLOCK ONLINE - AN OVERVIEW

I've a G22 that I bought for any duty weapon about eleven yrs ago. I was about to get An additional Glock in .357 right until I learned I could just do a barrel swap on my G22. Problem is which brand name barrel and where to purchase it? I often CC it but primarily just shoot it for the vary. Simply click to develop...Qty: This item is now out of s