Wondering if this is normal

[KevinS53190]

So I couldn't find any 8 round M&p shield M2.0 mags so I got mags for the 1st gen m&p shield and my question is....is it normal for one mag to load a little stiff to where I have to slap the butt of the mag to lock

 

[MTC(SS)Ret]

In most cases when you load a full mag into a pistol with the slide forward it will take more force to lock into place. With the slide locked open it is easier to lock in a fully loaded mag.

 

[robrossk]

yes - has happened to me before

 

[Saudade]

On a closed slide? Yes, lot's of guns do that.

 

[Spindrifter]

Yes, mine is the same.