As I've mentioned previously, I have an unwarranted love of SMGs and similar such things. Owning a Glock, and often seeing things with the various flavors of GlockStock, I kind of want one. Better yet, I have thoughts for my own.
Problem is, NFA bullshit with SBRs. Also, the fact that to put a stock on a gun, you must turn that gun into the SBR, getting it a new serial number, and only being able to use the stock on said gun.
What I want to do, if possible, is register the stock itself as the SBR. I know that there are bits of machine guns, such as autosears, full auto conversion bolts, and the like, which have their own serial number and paperwork, conferring their legal MG status to any gun into which they are placed.
Something to ponder for a bit down the road when I start shelling out for tax stamps and jumping the flaming hoops, if those are still necessary.