New gun, just put a drop of gun oil around the mag release button and insert and release the mag ( with no rds in it) about 10 times to loosen it up.
Also check the extension to make sure it's not binding in the mag well.
See if that helps.
Thanks tango but still the same... it works as it should when I have the slide open or no rounds in the mag but as soon as its a full mag and try to insert it, it rough to push in all the way and release it
With two more rounds you have considerably more downward pressure on the magazine with the slide closed. This will result in increased force required to depress the magazine release button. If you think you need the extra 2 rounds this is the result you must live with.