Does a Glock grip-reduction nullify the lifetime Glock warranty ?
I was considering using one of your advertisers, who do changes to the grip-angle etc.
But, I don't want to do it, if it nullifies Glock's warranty.
Any work you do on your Glock will most likely void the warranty on that part. The warranty on the remaining parts of the gun are good to go. If you modify the grip the factory will not repair it if it breaks HOWEVER the contractor WILL so really, there is no loss of coverage