BAZOOKA aka M20A1B1 3.5 Rocket Launcher

Hi Guys I have one of these (demilled) and am trying to find the front barrel Assy I have a
Grandson that is Autistic and loves Military items i gave him alot of Mil-items Like mess kits
canteen MY Helmet Nam steel type My Brother gave him his Flight Suit and Helmet
when he retired B-52s and he has stuff like Dmiled Granades bayonets E-Tool ETC:
so you can imagine when i showed him this beauty and told him it is his as soon as i get it together but i just cant locate it so i probably will end up useing PVC Pipe and painting it
but i thought i would try once again and hopefuly find someone that has info on this type
stuff Anyway thanks, any info is apreciated S.D.