M79 inner barrel set.

[The Keeper of Secrets]

I'm sure I'm being thick and missing something here.

The inner barrel set is basically 6 barrels that are installed into the M79 and provide hopup for the moscarts. Now considering that the barrels are fixed, and that the moscart can go in any position, then surely you'd have to insert the moscart perfectly to align it to the 6 inner barrels?

Just seems odd to me, am I being thick?