HK USC Converted to UMP

We sell brand new USC rifles that are converted to UMP.

These guns start off as sporter USC guns and we perform the following:

• We mill out the receiver to accept double stack magazines.
• Install converted magwells to accept double stack mags.
• Cut the forward vent holes (if desired)
• Install stock adapter & UMP stock
• Install correct 8" barrel (If factory SBR is desired)