This might belong in another forum...
I'm looking at a Remington 1911SL shotgun (12 ga). Not the Model 11, but the "Widow Maker."
I have two Model 11s that have a fiber buffer inside the receiver. From what I understand, the 1911 SL Widow Maker has a fiber barrel ring but I can't find any schematics to show where it is, or any info on what they are. Any info?