S&W M&P 15-22 difference between 10rd vs 25rd

[rjevande]

Hi everyone, without seeing the engrave on the mag, does it stand true that all OEM S&W M&P 15-22 .22LR 10rd Long mags have blue followers while 25rds Long are orange, with the exception of the short stack 10rd which is orange. Does S&W produce mags with an orange follower that only holds 10? Any input is appreciated.

[ar15barrels]

The follower color is blue on the long 10's and orange on the 25's.
The BODY of both long mags is the same except for the internal pin that stops the blue follower at 10 rounds and captures the follower into the magazine body.
The 10's don't have a loading button to pull the follower down while the 25's do.
This is related to how the 10's have to be assembled with the follower in place before the mag sides are welded together vs the follower just being able to slide into the 25rd mag body after the body sides are welded together.

[rjevande]

Thank you for the thorough explanation. Very much appreciated.

The follower color is blue on the long 10's and orange on the 25's.
The BODY of both long mags is the same except for the internal pin that stops the blue follower at 10 rounds and captures the follower into the magazine body.
The 10's don't have a loading button to pull the follower down while the 25's do.
This is related to how the 10's have to be assembled with the follower in place before the mag sides are welded together vs the follower just being able to slide into the 25rd mag body after the body sides are welded together.