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HK UMP/USC CONVERSION SERVICES AND PARTS
The USC to UMP conversion is very popular with HK owners and enthusiasts. The basic USC is not as versatile and not nearly as ergonomic. What you gain by doing the UMP conversion is not only looks and authenticity, it’s also a better feeling and better handling gun. The feel of the grip itself is much better and the folding stock option is a big improvement over the fixed USC stock. If you are in a state that does not allow the folding stock, it is still worth it just for the better ergonomics of the UMP grip. These ergonomics greatly improve the shoot-ability and feel of the USC.
For completed USC UMP conversions for sale/ready to buy, contact us to see what we have in stock:
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.
The ultimate civilian legal UMP clone can be built if you are in a state that allows you to register your gun as an SBR or Short Barrel Rifle. Contact us for details on From 1 SBR registration.
Base USC to UMP Conversion Service (Stock Block Type)
THIS SERVICE INCLUDES:
- Milling the forward barrel cooling vents in the USC receiver to match the venting of the UMP
- Milling the magazine well of the USC to accept the larger UMP magazine
- Dying of the gray polymer, USC to the dark black HK color
- Milling of the forward receiver hooks on the UMP lower to accept the USC upper
- Filling and false pinning of the forward section of the UMP lower for 100% ATF legal piece of mind
- UMP stock catch option, just like real UMP
- Dis-assembly and reassembly
Basic USC Carbine To UMP Folding Stock High Capacity Carbine
USC to UMP stock block conversion and accessories
HK UMP to USC semi-auto lower conversion
USC magwell enlarged for use with UMP magazine
Before And After, UMP Cooling Vent Slots On USC
Vent slot/receiver milling on USC to UMP conversion
UMP folding stock catch, molded to USC receiver
California compliant versions also available
ULTIMATE USC TO UMP CONVERSION (FULL WELD-ON)
This “fuse job” conversion offers the most realistic, true to the real thing, conversion a civilian can own! The plastic welding “fusion” procedure requires lots of time and patients as well as plastic welding experience and jigs.
THIS SERVICE INCLUDES:
- All of the above “basic services”.
- Welding the UMP rear section to the USC receiver and adding the stock catch to the side of the gun.
- Re-marking/Engraving the HK UMP correct markings
Completed Full Weld-On UMP Conversion With Accessories
USC To UMP Re-Marking/Engraving
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USC Barrel Cutting & Threading
USC To UMP Weld-On Conversion Process Start To Finish
USC Receiver Cut & Ready For UMP Rear Section
UMP Rear Hinge & Alignment Jig Ready For Welding
Initial Plastic Weld Seam On UMP Conversion Ready For Cleanup
Full Weld-On UMP Conversion Ready For Deployment
HK UMP SD Custom Conversion
Custom UMP SD Conversion Service Options:
Magpul, HK or other custom buttstock
Shaved fixed sites and full length top rail
Threaded barrel for use with various existing suppressors
Cut out enlarged/modified foregrip using Magpul MOE parts
Custom cocking handle
UMP SD Custom Build Flat Top Magpul Stock
UMP SD Custom Magpul Foregrip Modification
Molded UMP SD Foregrip Modification Closeup
Widened Foregrip For SD Look & Suppressor Recessing
Finished UMP SD Pistol Conversion w/ Flat Top & Arm Brace
UMP SD Recessed Suppressor Flat Top Allows For Flip Up Sights
UMP 45 & UMP SD Comparison
UMP SD Configuration w/ Magpul Stock Folded & Flash Hider Option
The UMP SD is a custom project so you can pick the options you’d like to go with. Example pricing is as follows:
Additional USC to UMP Services
Additional customization options are available. Click the links below to see the corresponding service pricing and to add services to your cart.
What To Expect
- NO FOREIGN MATERIALS USED when welding or plastic fusing
- NO FILLERS or putty, only melted nylon from the actual HK polymer
- Bondo/body fillers, epoxy and other “quick fix” materials will crack, flake and compromise overall finish/durability. You will not find this in our work!
- No waves! Smooth flat even surfaces ( Straighter than the factory since most mold waviness is removed during the process )
- No pinholes in final finish
- DuraCoat Firearms Finish w/ slight texturing, NO SPRAY PAINT!
- Masked engravings to prevent texturing grit from obstructing markings
- No rough edges or internal blemishing, bolt will slide perfectly, just like factory
- No cracking, splitting or other weld failures, guaranteed ( 100% track record to date )
- No rushed work/assembly line procedures or “unskilled help”
- Hours of special attention to detail will be spent on YOUR project…
