Thompson 20 and 30 Round Mag Springs

[peter kohler]

anyone know where i can buy 2 -20 round and 2-30 round mag springs?     i cant seem to find any for sale 

thanks for any information

peter

[StrangeRanger]

Wolff is almost always the first go to for springs

https://www.gunsprings.com/THOMPSON/Magazine Springs/cID2/mID115/dID350

[peter kohler]

can the thirty round spring be trimed to fit the  20 round?    

[thirtyround]

Good question, yes, no , maybe, probably..... if you do so, ensure the factory formed end is used up under the magazine follower as designed.  Cheers. JB

[Burgernut]

In reply to PK question, I've been trimming the 20-rd. spring in a 20-rd. mag to try and give less resistance in feeding. I have removed 3 full coils and it still works and feels smoother and easier to load. Bear in mind this is just playing with inert rounds, I have not shot this thing yet. As thirtyround opined, do it only on one end to keep the loop under the follower factory fresh.

[peter kohler]

IM GONNA ORDER A 3 PACK FROM WOLF AND EXPERIMENT WITH THEM        I LET YOU KNOW HOW THE WORK

[StrangeRanger]

Call Wolff and talk to their techies.  I can just about guarantee that you will not be the first person who has asked this question