Unknown Pyro desintegrator rifles...

Space rifle, Sirolite,

Portugal, 1950's

These ones will require some information. Facts: 

1. they were found in Guimarães (Portugal). 
2. no markings whatsoever
3. they are a copy of the famous Pyro rifle, but with slight details (3 vents instead of 5 on the barrel  plain crank, no name on the painted part of the stock...)
4. size is the same as Pyro
5. mechanism works the same way (you turn the crank and the barrel moves in and out and in...)

Twins, how nice... 

Barrel detail - upper parts move at turn of crank

For comparaison, here are some pictures of the "Real Mc Coy" made in USA by Pyro (stock/archive photos - not mine)

Pyrotomic desintegrator rifle (red), USA,
1953 

Some came with white lettering ?

and in bronze...