Double Handed Tool Weld Issue?

Hey everyone,

I'm scripting a laser weapon and I would like the character to hold it with both arms. I'm using the R6 character.

Here's the arm welding I'm using:

larm_w = Instance.new("Weld",handle)
    larm_w.Part0 = torso
    larm_w.Part1 = larm
    larm_w.C0 = CFrame.new(-0.3,0.5,-1) * CFrame.fromEulerAnglesXYZ(math.pi/2,0,math.pi/4)

    rarm_w = Instance.new("Weld",handle)
    rarm_w.Part0 = torso
    rarm_w.Part1 = rarm
    rarm_w.C0 = CFrame.new(1.3,0.5,-0.6) * CFrame.fromEulerAnglesXYZ(math.pi/2,0,math.pi/-18)

That works fine, but when I remove the weld the player arms just fall off.

This works fine unless I'm testing with networking? Any suggestions?