That's not an M8. M8 has the oversize plastic trigger guard cover, to keep you from burning your fingers, and a button-type mag release by the trigger guard. That gun doesn't have the plastic cover, and has the European heel-clip release.
I like this one, by the way, better than most heel-clips, because it pushes inward, instead of outward. Faster to work. It was changed to the button release at the request of cops, who discovered that the seat belt would release their magazine.
Meddle not in the affairs of dragons, for thou art crunchy, and taste good with catsup - George of Lod, Year of Our Lord 297
I always take precautions.
Beware the Evil Bullet Fairies.