Lee metford 22 trainer stock

[rempel429]

My sister recently sent me some parts up from the states, in the box was a for-stock marked lee metford 22 trainer, any body know anything about these things? I thought I was just getting some barrel bands and a few other small parts for my mle but this was in there

 

[rgg_7]

Got a picture? Any dimensions? Might be able to give an opinion after I see what you have.