Instruction: Output yes if the supporting document can answer the given question. Otherwise, output no.

Input:
Question: Is this the extension or the full magazine tube?  The part number listed is for the full tube. Can you please clarify.
Document: The extension tube matches the stock magazine perfectly. It installed easily and works well. Remember to order a replacement spring to accommodate the extra round capacity. Worthwhile purchase.
I just purchased a Benelli M4 Tactical and have had issues with the really strong magazine spring in the tube. Once I replaced the shortened magazine with this extended tube, the tension was MUCH LESS and the 12 gauge shells did not give me such a hard time pushing into the magazine tube - since it was the original spring that I was using when adding the extension tube. Trust me, the extended tube really does make a difference.
Purchased this product for a tube expansion. I was surprised to find this on Amazon. Why use an original Benelli part? Because the fit and finish with the M4 is near perfect. No extra spring needed. Good Quality, speedy delivery, price is high. Customer support was excellent from this merchant!Difficult to find so order one soon before they are out.
What can you say, the part comes as described. Ask for individually wrapped if you want the benelli labelled material to come with it.
Watch your 922(r) regulations with this item. Typically need to upgrade a few other items to American made in order to have this tube on a m4.
Works great with the original spring. No issues at all. Perfect match and good customer service.
Received in factory package in perfect condition ...Installed on Benelli M4 easily ...Works flawlessly after over 300 rounds ...Benelli Quality...
Looks like it was dropped on its end (small rim damage with a decent gash into the metal) and the finish is scuffed all over.It'll work, the threads look fine, but I wouldn't install this on a new M4. It's fit and finish is a big detraction.Will be fine for used, service, or duty weapons.
Item arrived as described. Found out later that I needed to do a few extra things to make it compliant with federal laws.
It REALLY helps ALOT! My shotgun now shoots like a pillow is between me and the buttstock and I cannot find a 12 gauge projectile that hurts my shoulder when shooting it. Happy Shooting!
Answer: yes