H&K release the SP-5 for the civilian market on the lines of MP5 which could be converted to a fully automatic military grade subgun. There are also tons of alternatives and in one of US Army's RFI for the replacement of their MP5, the following manufacturers expressed interest
- Z-5RS, Z-5P and Z-5K Sub Compact Weapons; Zenith Firearms
- B&T MP9 Machine Guns; Trident Rifles, LLC
- MPX Sub Compact Weapon; Sig Sauer, Inc.
- 5.5 CLT and 5.5 QV5 Sub Compact Weapon; Quarter Circle 10 LLC
- PTR 9CS Sub Compact Weapon; PTR Industries, Inc.
- MARS-L9 Compact Suppressed Weapon; Lewis Machine & Tool Company
- CZ Scorpion EVO 3 A1 Submachine gun; CZ-USA
- CMMG Ultra PDW; CMMG, Inc.
- Beretta PMX Sub Compact Weapon; USA Corporation
- CM9MM-9H-M5A; Colt’s Manufacturing Company, LLC
Only if IA and other Indian paramilitary forces look more keenly into domestic small arms manufacturers like SSS Defence, we could develop world class small arms in-house instead of depending on crappy OFB's