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.
No
All.
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.
It means you have a Mossberg Model 500a shotgun with the serial number L109563.
Yes.
No
It can be, if you are using a slug
You will have to call the company to find out.
175-350 USD
They are the same. Mossberg 500 series includes all shotguns. 500A is 12gauge. 500E is 410.
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.
The best way to find the age of a Mossberg 500A Shotgun is simply to call the company's customer service line and have the serial number and model number handy. Mossberg has yet to publish a list of their serial numbers in relation to the dates of manufacture.