1. Is the gun what the seller says it is? For example if it is being sold as pistol and the receiver says CM-11 (the carbine version of the PM-11). Or the seller claiming the gun is a pre-ban (not that it matters any more any way) and it’s marked as a PM-11.

2. Are the accessories installed on the gun legal? This primary applies to semi-auto versions of the M-11. For example a PM-11 with a folding stock is illegal unless registered as a SBR.

3. Does the lower receiver look normal or is it malformed? This primary applies to transferable full-auto M-11 variants. Some times a full-auto M-11s can be found that has receiver damage from a catastrophic ammo failure or a poor factory weld. Some sellers will fail to mention this to make a quick buck & will pass these off onto unaware buyers. This usually happens with guns bought online so be sure of what you are buying. It’s a good idea with these guns to remove the upper and look at the welds in the lower to make sure they are not cracked or broken.

A. Location of two internal welds you should check

4. Do the moving parts function correctly? Check to make sure when you pull back the bolt it doesn’t bind up and get stuck.

5. Do all the parts look to be there? Do a quick check from the outside to make sure items such as safety switches, axis pins, ect are there.

6. Do any of the FCG parts appear to have excessive wear? This primary applies to transferable full-auto M-11 variants. On some FA models the sear and sear catch may have worn prematurely which can result in a runaway or malfunctioning gun. Look in the trouble shooting section for more information on this problem.

7. Does the gun appear to match the “history” that the seller is giving? For example if the seller claims the gun has never been fired yet there is powder residue inside the chamber or carbon build up you know they are not being completely honest.