If you have a 500, and it is a 12 gauge, it is a 500A. The "A" designates it as a 12ga. A 500B is a 16ga, a C is a 20ga, and an E is a .410.
They are the same. Mossberg 500 series includes all shotguns. 500A is 12gauge. 500E is 410.
Yes, it is. The 600AT was simply sold under the New Haven name instead of the Mossberg brand. It's a Mossberg 500A (12 gauge) intended for targets and hunting (long barrel and great wood). All Mossberg 500 parts fit it.
There is no difference. A 500 is a basic Mossy 500 receiver shotgun. Unless the gauge is stated, it's assumed it's a 12. The 500A is simply stating it as a "12 gauge" 500 in its name. The Mossy 500A is a 12 gauge model 500, the 500B is a 16 gauge model 500, the 500C is a 20 gauge etc. There was no 28 gauge so there is no 500D, contrary to many sources, so the next one was the .410 called the 500E. A 12 gauge model 500 and a 500A are the same gun.
The model 500 Mossberg is a particular style introduced in 1961 by O.F.Mossberg & Sons. It has undergone many style changes over the years, but 500A, B, C, or D are not style changes. A model 500A is the 12 gauge version of the model 500. 500B is 16 gauge. 500C is 20 gauge and 500D is .410 (which is actually a caliber rather than a gauge.
I don't know why someone would completely not answer you. You asked about the 600ct correct? So to know about the AT really isn't much use to you. Yes it is the same as the Mossberg 500A!!!!! It was a model created for a store brand to identify which chain was selling the item. All parts and fubctions and shape and size is identical to the 500A. The only difference is that it had a 1/2" shorter barrel than the 500A due to the full chokeAnswerThe Mossberg (New Haven) 600 AT is essentially the same as the Mossberg 500. The differences are the 500 has a firing pin spring, and the action bars on the 600 can only be removed by removing the magazine tube. AnswerThe Mossberg 600 AT is the same as the 500 with two differences. The 500 has a firing pin spring, and the action bars on the 600 can only be removed by removing the magazine tube.
It means you have a Mossberg Model 500a shotgun with the serial number L109563.
It can be, if you are using a slug
You will have to call the company to find out.