picked up 8 of these along with the inner fill valve o-rings . They work well for the TM MWS . No longer spewing gas while filling . Easy to install and quick meetup . Totally recommended ! Great upgrade for less than $10

Thanks for the review! Glad they worked with the MWS.
Someone was pm'ing me about that and I wasn't sure what to tell them since I haven't played airsoft in a long time.