Adjustable base rubber for bullpup rifles

Abstract

The invention relates to a part called base rubber (1) and/or butt rear rubber which is developed to be used in butts of the bullpup rifles. Said base rubber (1) has a feature that is adjustable in different sizes according to the demand of the user.

1 . An adjustable base rubber, comprising, at least one base rubber having at least one pin, wherein the pin can enter and exit a pin housing, wherein the pin housing is located on a butt end of a gun stock. 
     
     
         2 . The adjustable base rubber of  claim 1 , wherein the butt has at least one lock housing. 
     
     
         3 . The adjustable base rubber of  claim 2 , wherein the lock housing has at least one lock, wherein the lock is engaged with the lock housing and has at least one pin hole on the lock. 
     
     
         4 . The adjustable base rubber of  claim 2 , wherein at least one spring is wrapped around the lock. 
     
     
         5 . The adjustable base rubber of  claim 1 , wherein the pin has at least one node. 
     
     
         6 . The adjustable base rubber of  claim 1 , wherein the pin housing is located on the butt and passes through the lock housing. 
     
     
         7 . The adjustable base rubber of  claim 3 , wherein at least one pin passes through the pin hole. 
     
     
         8 . The adjustable base rubber of  claim 3 , wherein the lock has at least one notch where the spring rests and/or sits on.