Is there a form to send to the BATFE to notify them you want a different length than listed on the form? Or do you just sent the examiner a letter?
Got my delayed stamp yesterday, it was very annoying that it went "problem" in November and they never notified me, I'd still not know if I hadn't called when it got to 7 months in January. But once I called, they were very responsive, returned my calls, and were otherwise helpful getting it resolved. Got the Trust redrawn (it had already been approved by two other examiners before I'd mailed this one in, having had it done by a lawyer doesn't really guarantee anything) Feb 9, priority mailed the paperwork back to the examiner on Feb 10, and got my stamp yesterday Fed 18.
I'd listed 5.56x45, 7.62x39. 9mm, 5.7x28m & .22LR on the form (Multicaliber marked lower) and all the barrel lenght I'd seen commonly advertised almost a year ago when I sent it in 7.5" 10.25" 11.5" 14.5" but the first 5.56 & 9mm uppers I've got my eye on is 7".