B Skywalker
Copper BB
Hello, I am new to the forum & new to the 930 JM Pro shotgun. I broke down & cleaned the gun according to Jerry Miculeks video, except I did not remove the trigger group. After putting the gun back together I noticed about 1/8 inch or less gap between the ribs on the barrel & the ribs on the receiver. I cannot remember if that gap was there prior to breaking it down. I took it apart & put it back together 3x & I cant close that gap. My buddy that has a 930SPX says it's probably normal because his vent rib bennelli looks similar. Is there supposed to be a small gap between the ribs on the barrel & the ribs on the receiver? I'm assuming those serrations running the full length of the barrel & receiver are called ribs. Thanks