Glock has designed a new beavertail backstrap for the Gen 4 Glocks. You can switch out the current backstrap for the new beavertail backstrap in seconds. This new backstrap prevents “slide-bite” if you use a high grip on your Glock. This is very similar to the 1911 beavertail safety. Not that I want to compare the Glock to the 1911.
There will be 2 versions available, a medium and a large beavertail backstrap. They will be available very soon. I will keep you updated.
Here is an after market beavertail grip for the Glock Gen 1,2, 3 from Grip Force.