One of apparently only 50 of these pistols ever produced, only 34 of which were imported into the United States, this HK P7M13-SD is currently up on Gunbroker with 10 days left on its auction.
Designating a firearm that is made to be shot suppressed (or is integrally suppressed), “SD” in this case means the pistol is equipped with a threaded barrel and is tuned for use with a suppressor. This was always extremely rare with the HK P7’s gas delayed blowback operating system.
Unlike my HK P7PSP or the HK P7M8 that followed it, the P7M13 managed to fit a staggered magazine into its frame so it holds 13 rounds of 9mm in the magazine instead of eight. Many consider it the pinnacle of HK P7 development (some purists prefer the M8), but that’s probably only because the -SD is so insanely rare it isn’t even given a vote.
If anyone is looking for a President’s Day present for me, there’s 10 days left to win the auction!…