Question? Magazine convertion 30 to 50 round

[Mike0055]

I know you must replace the 30 round spacer floor plate to the flat 50 round floor plate but do you have to replace the spring in a 30 round mag to convert it to a 50 round? Is the spring in the 30 round is shorter than a 50?

[M1P90]

The springs are the same.
This thread has some info you might want to look at.
http://fnforum.net/10-round-to-50-round-t7754.html

[Wolfpuppies3]

it's the same spring. $7 for a new floor plate, 25 seconds to install and you're good to go.

[jhs27275]

$7 for a new floor plate

Take the old floor plate cut off the ends and glue them together, $0.