I just got a new M&P 45 (my first M&P) and have 7 ten round mags for it. I have cycled them all equally through the gun in the first 270 rounds.
On 4 occasions with 2 particular mags the slide has locked back with rounds left. Is this the mags or is it just a coincidence and the gun is to blame?
All my searches have brought up issues with slides NOT locking back on the last round.
Other than this issue the gun is working fine will factory and reloaded ammo, both hardball and lead.