Long time lurker first time poster. Great Forum!
Here's the current situation: I have an M1 Super90 which I believe to be the "Tactical" or "Defense" version. It has the pistol grip stock, 18.5" barrel (with no provisions for choke), the magazine tube is one piece, i.e: not extended in anyway, nor is there a cap on the end of the tube, and it holds seven 2.75" rounds. It runs like a champ and I love it, with one exception.
Here's the problem: I'm using this shotgun in local Multi-Gun matches and I'm just getting into quad loading. It sure would be nice if the tube held 8 rounds . I'm hesitant to go any further as the magazine would stick out too far past the short barrel, plus with the stages we run anymore capacity isn't needed.
Here's the question: Could I use a 4-shot tube from a "Standard" M1 or M2 or any other model for that matter, then add an extension to get to my 8 round capacity? Is there a more elegant solution?
Any suggestions you have are greatly appreciated.