i remember 10yrs or so ago , some one maybe navy arms, was selling shortened #4 mk1 ,no it didn't look like jungle carbine, it looked like regular #4 km1 just shorter,it looked good,still had bayonet lugs on end of barrel,short light and handy , did any one get one??? how did they do conversion??good ??bad?? with bayonet lugs still on end of muzzel it looked like they cut off barrel,and rethreaded it,that would seem unsafe to me .who's got one??