not sure what you are asking but here goes the Mossberg is a 20 ga 20 inch barrel 8 shot home defense pump it is a good solid gun the MagPul SGA is a Remington 870 12 ga 18.5 inch barreled 6+1 capacity home defense shotgun It is also a very good gun of the 2 I would take the SGA due to the wider range of loads available in the 12 ga you can go from the superlight Mini shells to a full 1 1/4 oz payload and anywhere in between If there is something else you want to know please repost and I will try to help

Cecil, Well the model 54300 is a 20 guage 20" barrel and 8 shot capacity and is a 'Bantam' model'. Made by Mossberg. The Magpul SGA model is 12 gauge 18.5" barrel. Of course the magpul furniture and capacity of 7. Made by Remington. Two totally different shotguns. Depending what you want. If your debating between the two? The Remington model 81192 would be my choice hands down.