870 Express 3 shot mag extension with a 18.5 Barrel.

[HassanZeDragon]

Hi,

I've recently purchased a 18.5 for my 870 express which has 4+1 shot capacity.
I was wondering if i can put on a 3 shot mag extension and be flush with the barrel?

 

[J.P.]

nope, 2 round is flush (or close to flush depending on make) for an 18.5" tube

 

[rotncore]

You'll want a 2 shot extension to be flush.

Beat me to the punch!