There is no specific regulation in California prohibiting the use of a pistol grip on a shotgun. However, depending on how the shotgun is configured, it may be classified as an assault weapon under state law.
Assault weapons are defined as semi-automatic centerfire rifles or pistols with detachable magazines and certain other features, such as a pistol grip or forward grip. Semi-automatic shotguns with any of those features are also considered assault weapons.
It’s important to note that while there is no specific prohibition against pistol grips on shotguns in California, possessing an assault weapon is generally illegal in the state. So, if your shotgun has a pistol grip and meets the definition of an assault weapon, it would be best to check with your local law enforcement agency or a firearms attorney to find out if it’s legal for you to possess.
Pistol grips are not the only feature that can make a shotgun an assault weapon in California. Other features include but are not limited to, detachable magazines, forward grips, and flash suppressors. So, even if your shotgun doesn’t have a pistol grip, it could still be classified as an assault weapon if it has any of those other features.
If you’re unsure whether your shotgun is considered an assault weapon under California law, it’s always best to consult with a firearms attorney or your local law enforcement agency. They will be able to tell you whether or not your particular shotgun is legal to possess in the state.