What reg or memo states that a 91F can’t be an armorer?

SSG, When we go through the school house we are taught we can be armorers because it’s a conflict of interest. The Marines we train with are actually required to be armorers at some point in there career. 2111’s actually take a armorers course I believe on there side of the school house after we spilt. We can order parts and if we have accountability of the weapons too we don’t have a check and balance. It’s very easy for a 91F to take weapon parts if that was the case. I hope this helped SSG

PFC (Join to see) so as a 91F I'll tell you we can, and I've seen it more than once be unit armorer's. The issue with a 91F being a unit armorer is the MTOE, so a 91F is slated for the unit and isn't being used as a 91F, however that is a true statement regardless of the MOS of the Soldier because unit Armorer is not MOS specific. I had an E-5 who was a unit armorer for close to ten years, I would yank him to the shop when he was not working in the Arms Room, because he had the idea unit armorer was a full time job, and I argued that it was an additional duty and I wanted to expose this NCO to dealing with Soldiers since I lacked NCO s. Apparently with other NCOIC s he was able to just be the unit armorer,but don't get me wrong I would work with him, I still understood there are responsibilities a unit armorer has that are unique.

PFC (Join to see) - There is no such rule. I instructed 91F for 9 years and taught the unit armorer course for about the same time. There's no conflict of interest. An MOS doesn't authorize you to order parts. The position does. If you're a 91F being used as an armorer, you can't order parts other than some normal wear and tear items, slings, magazines, etc. Controlled weapon parts are ordered by the shop performing the corresponding level of maintenance required. If you are being used as a unit armorer, you are not authorized to perform those levels of maintenance, regardless of your MOS. Performing maintenance above your unit's echelon of authorized maintenance, you are in violation of regulations and anyone who allows you or orders you to do so, is as well. Even if you were assigned to a DS/GS shop/unit and were also billeted as the unit armorer, your Class IX shop and PLL clerk should be tracking parts ordered, issued, and residue recovery for parts replaced. That would be your checks and balances.

Yes. I was a 2111 working in the Ordnance Maintenance Company Shop (78-82). I worked in a level 3 and 4 Echelon of Inspection and Repairs. Unit Armorers were basically allowed only to take apart the bolt mechanism, where we tore the weapons down to the receiver, inspected everything, ordered parts, put them back together, reinspected them and returned them to the unit armorers.

That is true but when I left the FSB unit to a artillery unit they put me in as there armor supported by my old unit when I sent in for repairs the first few times I filled out work orders with the part numbers to fix the weapons m60 after that they had me come to the shop and install them partly cause they were short handed
But I don't recommend stepping on toes

SPC Jason McFarland - I don't see that as a conflict, actually. That's good use of assets. When I was at the school house I would help the DS/GS shop service and repair M242 chain guns for the BFVs. I didn't work at the shop but they still used my expertise. There is nothing wrong with using someone as an SME if they truly are one.