😊thank you.the men I got are 1.35

Hi Boats (!)
Armament for MTB379 was
Armament

MTB 379/395
2 20mm AA (1x2)
4 .303" AA (2x2)
4 18" torpedo tubes
https://uboat.net/allies/warships/class/647.html

Have a look at Battlecrafts
http://www.battlecrafts.co.uk/index.php/armaments/27-twin-mk-12a-oerlikon-gun
http://www.battlecrafts.co.uk/index.php/armaments/33-twin-500-vickers-machine-gun
Other scales are also listed in their shop.
Talk to them if you need a different scale.
If you have plans, e.g. John Lambert, they will look at making what you need.

Same for Shapeways-
https://www.shapeways.com/marketplace/miniatures/ships?q=&sort=popularity&facet%5BpdcId%5D%5B%5D=520&facet%5BpdcId%5D%5B%5D=528&facet%5BpdcId%5D%5B%5D=535&facet%5Bprice%5D%5Bmin%5D=1&facet%5Bprice%5D%5Bmax%5D=2500&facet%5Bprice%5D%5Bfrom%5D=1&facet%5Bprice%5D%5Bto%5D=2500
Happy hunting 👍
BTW: it helps if you give the scale of your model with such questions!!
Cheers, Doug 😎

You could try Battlecrafts.co.uk
They manufacture many types of guns and torpedoes. They also make a lot of deck fittings.