Nordic +4 vs Vang Comp +2 extension weight

[nugi]

I'm looking for a good balance of weight and firepower for my 870 20 gauge. Nordic's aluminum is said to be lightweight and the smallest they make is +4. Vang Comp makes a +2 20 gauge extension out of monolithic steel. Will they both end up weighing a similar amount or will the smaller size/capacity of the Vang Comp vs the lighter materials of the Nordic make a noticeable difference?

Thanks

[edited original post for clarity]

[ChillyB]

For me durability is paramount. The extension, even clamped, is a primary vulnerability. If broken off or even kinked the gun is out of commission. So I opt for steel extensions. I dont need to carry the shotgun long distances and the weight doesnt bother me.

[nugi]

Point taken, but isn't the threaded connection point between the factory tube and extension just as likely to break if a steel extension is knocked as with an aluminum one?

[USAF Shooter]

Nordic brand makes a +1, a +2 and all the way to like +7. They are extremely durable and very strong. I use a Nordic +3 on mine.

[ChillyB]

Point taken, but isn't the threaded connection point between the factory tube and extension just as likely to break if a steel extension is knocked as with an aluminum one?

I recon so. I've read somewhere thats where it'll break, not sure.

[nugi]

Nordic brand makes a +1, a +2 and all the way to like +7. They are extremely durable and very strong. I use a Nordic +3 on mine.

From everything I can tell the smallest size they make for 20 gauge is +4. I clarified my original post, my question is whether 2 rounds in a monolithic steel extension tube will be noticeably heavier than 4 rounds in a light aluminum tube

[USAF Shooter]

No, for sure no it wouldn't be heavier.

[nugi]

No, for sure no it wouldn't be heavier.

Ok, thanks