No, it is a firm fit. I have to push the lugs down with my thumb to get the barrel in place. When I first changed the bushing, it took a tap with my SMALL delrin hammer to get it in. Now, 1K round later, its a bit better. Still does not drop in. Like I stated before, a little push with your thumb should do it.
Also, getting the barrel out is a trick. I find that if I lift it up by the lug about 30 degrees I guess, then pull it back into the breach face, I will feel a pop as the barrel moves back a bit and it will then lift right out