i see they are multiple mag extensions for the remington 870, which one do i need for my 18.5 pardner protector so that it is even with the barrel? how long is the right one?

i see they are multiple mag extensions for the remington 870, which one do i need for my 18.5 pardner protector so that it is even with the barrel? how long is the right one?

 

 

I am working from my knowledge of Remington Autoloaders, so someone should feel free to correct me if I am wrong...

Most of the guns I have seen that have the minimum length barrel and a full length mag tube use a +2 extension (with 4 being in a standard mag tube). A +3 would extend past your barrel. It looks funny, but I have seen it.

Depends on which 870 you have (but you don't so get one!)

mine is a 6+1 but the newer ones are 7+1, they are exactly the same length but the extension tube has a little cap on the end for the spring to fit in giving it one extra round