This section will outline the various types of USC to UMP conversions and options. This page will give you all of the information you need to decide which type of conversion you want to do and how to do it.

Choose from an expansive selection of HK UMP and USC parts, such as HK UMP Barrels and HK USC Stocks, crafted for those who value reliability and performance. Upgrade with HK USC Handguards and HK UMP Triggers, and experience the difference in quality and craftsmanship.

We can set you up with a UMP clone that suites your needs and budget! We can add the UMP folding stock and grip ergonomics. The conversion allows you to use high capacity, double stacked UMP magazines. UMP ejection port stock catch and cooling vents can also be added.

May 2, 2017 · HK USC to UMP Stock Block Conversion. This write-up covers the stock block conversion method for converting the HK USC to a UMP clone. It is a basic conversion only for the standard .45 ACP USC and does not delve into the other caliber conversions. 1. Conversion Overview - Stock Block B. 2. Conversion Parts List. 3. Compliance Parts. 4.

Feb 2, 2012 · Another real easy way it to take a UMP mag and place it in the USC upper receiver , only the magazine feed lips will fit in the opening. Simply trace around the magazine body where it interfaces with the upper receiver and cut that out and clean up with a flat file.

May 14, 2018 · The USC/UMP retains every bit of the supreme reliability the UMP is well known for. The USC/UMP45 conversion feels exactly like the issued UMP45 I shot in Afghanistan. It’s unfailingly reliable, and accurate.

Oct 29, 2023 · I bought this H&K USC 45acp last week. Got to reading and searching for some upgrades that I could do. I purchased a new Complete UMP Lower, Stock Block to add a Folding stock to it, XS Tritium Front Sight, and a few other things.

Mar 28, 2013 · First of course, you will need to purchase an H&K USC- Buy a UMP lower, stock, and a “stock block” which is a magnificent piece of machined aluminum made by HDPS- Enlarge these hooks on the UMP lower with a round file to allow them to fit …

UMP/USC conversion kit will convert existing USC-UMP conversions to 9mm. This is a simple drop-in conversion for those who have already done the USC-UMP conversion. The conversion parts are drop-in with the total swapover of parts taking about 5 mins.

HK UMP .40 Caliber Conversion Kit This UMP conversion kit provides the necessary components to convert .45 sub-guns to .40 caliber. Machined bolt carriers are available for USC/UMP conversion sub-guns. This is a simple, drop-in conversion requiring a...