Why are rail grip/handles illegal on pistols??? I've been eyeing either a glock or S&W M&P, today I went to look at them and commented if rail grip/handles were available for them. the retailor promptly told me they were illegal for handguns. It doesn't make any sense. A rail grip/handle would greatly reduce muzzle rise and aid in accuracy & followup shots. how can an accessory that aids the shooter be illegal? what's ur view?