Mafio Thompson M1928 Airsoft GBB SMG
-Full steel body-Full steel trigger set-Fit to WE Thompson system-Real wood stock-Without Magazine
-WE Thompson may have a problem of leaking gas. It is caused by the new stock of magazines. If you used a new version magazine, the bolt may not completely chamber. It will lead to a sudden gas blow out. The old or used magazine does not have this problem as the gas lock is softer. If you only have the new version, you just need to press the gas lock(Parts 98) and fill it, then you can use it again.