Military specs called for 8 in. barrels only. Several things could be going on here (1) the gun is a cut barrel and the seller is ignorant, or a liar, (2) It's a commercial model and could have been shipped with a 6 in. barrel, as American models were made with 6 in. barrels, and fake US stamps have been applied. If the barrel looks cut it probably is. Ask the seller to show you his factory letter for the gun! Ed.