Is the 6mm ProShop Spring FRAG Grenades worth it? Combat Sport Supply got them and here is what they say about it... "6mm ProShop AIRSOFT Spring FRAG Grenades are Affordable and cool. They can ALSO be used with Gel Blaster Balls. Are they the cheapest Airsoft Frag Grenade that throws BBs? Are the Mechanical BB Shower Airsoft Grenades Effective?"