Click for larger picture
(Left side of weapon, thread cap, how rounds appear in magazines)
FACTS
 Brand  
 MakeHK
 ModelUSP SD V1
 Method of operation  
 Semi AutomaticRecoil operated w/ modified Browning locking system and recoil buffer system
 TriggerDouble Action / Single Action
 Feeding SystemDouble Stack box magazine
 Technical 
 Weight1.7 pounds (without magazine)
 Width1.26"
 Overall Length7.94"
 Barrel Length4.56"
 Overall Height5.35"
 Functionality
 Bolt position when firedClosed
 Bolt upon last round firedOpen
 Magazine capacity18 rnds (Jet funnel special mags)
 Decocking or Dry fireDecocking (lever on frame)
 Field Stripping  
 Tools requiredNo
 Small parts retained or looseLoose
 Ammunition  
 Caliber9mmx19
 Energy @ Muzzle358
 Velocity @ Muzzle1,140
 Grains124

Click for larger picture
(here you can see the high capacity magazines)
Opinions
 Method of operation  
 Its browning modified locking system has in essence been around for 100 years and is very reliable.  The removal of the barrel link makes it more reliable and easier to reassemble.
 Functionality  
 PriceHigh
 AvailabilityLimited
 Modularity / Accessorieslow (most stuff is for standard USPs)
 AccuracyVery Good
 ReliabilityVery Good
 Ease of field Stripping  
 Very easy because of the modified design there is no link assembly to line up when it comes time to put everything back together.  No tools required however all the parts do fall free.
 Ergonomics  
 The USP have V (Variant) configurations for left and right handed people, basically the controls can be switched.  With the addition of the Jet-Funnel (extended magazine well) it fits very easy into your hand and makes magazine changes very easy and fast.
 Sighting System (Optics)  
 Sight radius is 6.22" Target sights with micrometer adjustment for windage and elevation.  As far as pistol sights these are very accurate, however because they are large enough to work when a large silencer is on the front you may have trouble finding a holster and the sights have no nighttime illumination.
 Ammunition  
 PriceFair
 AvailabilityVery Good
 PunchFair
 Links  
 http://www.hecklerkoch-usa.com/usp_tact_general.html
 http://www.hkpro.com/usptactical.htm
 http://en.wikipedia.org/wiki/HK_USP#USP_Tactical
 http://www.streetpro.com/usp/index.html

Click for larger picture
(a better view of the Jet Funnel)

 My ramblings (Over all feelings; Why this Gun; is it worth it):

 The USP SD I purchased had the Jet Funnel pre-assembled so it came with 18 round magazines and thread protector for the threaded barrel. I have looked at USP's for a long time and had never seen this configuration before and was compelled to acquire it, and am very happy that I did.  It is the best shooting pistol I have, it is more feature rich and more precise than my custom built Springfield XD Tactical but it is also more expensive.

It is fare to say I don't carry this gun concealed, however I do use this gun in most qualifications and competitions.  
I have added an M3 light to the pistol and purchased a few of the hard to find 18 round magazines and that is it; and I feel that is all it needed or will ever need.

The Heckler & Koch USP9SD is a full size USP9 variant 1 (SA/DA) 9mm x 19 NATO pistol fitted with a frame mounted left side control lever that acts as a combined manual safety and decocking lever. The standard USP9SD is fitted with match trigger parts and click adjustable sights of sufficient height to see over the mounted optional sound suppressor.  The barrel is threaded left hand, does not have an o-ring and does not require a thread cap (however this model came with a thread cap).

Features
· threaded O-ring barrel with polygonal bore profile
· high profile target sights
· target sights with micrometer adjustment for windage and elevation
· one piece machined, nitro-carburized steel slide


Click for larger picture (a view of field stripped USP)


Click for larger picture
(The soft sided case that comes with the gun)