I recently picked up a Finnish Model 28-30 Civil Guard rifle in a pawn shop. The rifle in very good condition , serial no. 62xxx, dated 1939. It appears all correct except it is missing the aluminum barrel bushing at the nose cap that I have seen described on other web sites. Do any of you know it copies of this bushing are available and if so can the front sight be removed with out a great deal of effort to place the bushing over the barrel?