45 days? Sounds like they're made to order, then.
My theory is that sales of the SS languished when it was the only "short" m1a out there, most folks wondering what the point was. Along comes the 16" SOCOMs, and then there's no questioning why you might want a short m1a. The final step is that folks take a look at their choices, 16, 18, or 22, and decide that 18 is a better compromise length than a 16, which drives the current spike in SS demand. It also compares favorable, considering that the SOCOM II is a bunch of cash more expensive, and about 3 pounds heavier.
Well, that's my theory, anyway.