Custom grenade not recognized in GL_3GL_F launcher

[Custom grenade not recognized in GL_3GL_F launcher]

Could something like this work?

class UGL_F; GrandeLauncher
	{
		displayName = "CustomGranade";
		muzzles[] = {"this","CustomGrenade"};
		class GL_3GL_F;
		class CustomGrenade_GL_3GL_F: GL_3GL_F
		{
			magazines[] = {"1Rnd_MGL_Lacrymo_mag"};
		};