HK USP MAGAZINE SPRING INFORMATION:

All stock numbers are from Wolff's homepage, and are for Wolff +10% magazine springs:

Wolff Product number 78571 for use in:
-HK USPF 9mm 15 round magazine
-HK USPF .40 S&W 13 round magazine
-HK USPC .45ACP 8 round magazine
-HK USPC/P2000 9mm 13 round magazine
-HK USPC/P2000 .40 S&W 12 round magazine

Wolff Product number 78671 for use in
-HK USPF 9mm 10 round magazine
-HK USPF .40 S&W 10 round magazine
-HK USPC/P2000 9mm 10 round magazine
-HK USPC/P2000 .40 S&W 10 round magazine
-HK USPF .45ACP 10 round magazine

Wolff Product number 79331 for use in
-HK USPF .45ACP 12 round magazine
-HK MK23 .45ACP 12 round magazine

Each number listed is for an individual spring.  Spring packs can be had in packs of three or ten. For a three pack, replace the last "1" in each product number above with a "3".  For a ten back, replace the last "1" in each product number above with a "4".

Wolff Gunsprings Page for HK

Brownells Wolff Gunsprings page

*Brownells does not list any springs for USPF .45ACP or MK23 12 round magazines*  Spring listed as "#13" is identical to wolff product number 78571.  Spring listed as "#10" is identical to wolff product number 78671

––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––-

HK USP MAGAZINE POSSIBLE LOCATIONS FOR PURCHASE:

Robert Johnson  *try e-mail if not listed on website, excellent source for magazine baseplates*

Gordon Miller- HK Specialist  *try e-mail if not listed on website*

Cals Sporting Armory

––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––-

OTHER HK HANDGUN INFORMATION:

Park Cites Tactical USP

Jarvis USP Barrels

BarSto Pistol Barrels

Cops Plus Safariland 6004 Product Number list *great place to look up available 6004's, and purchase them too*

OPS2

USP Variants:

Odd=right handed, control lever on left.
Even=left handed, control lever on right.
1&2 SA/DA Safe/Decock,
3&4 SA/DA Decock only, no safe,
5&6 DAO safe only,
7&8 DAO no control lever, 8 not imported,
9&10 SA/DA Safe only, no decock.

LEM variants:
1= DAO 5 pound pull
2= DAO 8 pound pull
3= SA/DA Decock only, no safe (control lever to the left side of the hammer, on the rear of the pistol.
4= DAO 7 pound pull
5= DAO 10 pound pull

USP Product Line Changes: (Thanks BigBore)

1993 Original USP9 and .40

1994 Reduced the slide weight by 1.1 oz.
Reason: improve reliability with training rounds and make gun easier to carry.

1994-95 Change to a polygonal barrel
Reason: Glock

1994-95 Change trigger transfer bar
Reason: Improve reliability in cold weather and dirty environments

1994-95 Change recoil guide rod to a "captured spring version"
Reason: Glock

1995 Change trigger mechanism. Changed one piece catch to two piece catch.
GSL is a troll.
Reason: Improve drop protection, reduce manufacturing costs, eliminate hammer over travel

1995-96 Add rubber spur to hammer
Reason: Required to pass some institution's drop test.
?? on date-change size of magazine release to current smaller button.
Reason: to prevent inadvertent mag releases?

1995-96 Change angle on slide lock
Reason: customers don't want slide to close automatically when a mag is inserted

2000 Add locking feature to hammer strut support:
Reason: attempt to pacify safety Nazis

2001 Converted captive recoil spring retainer from c-clip to
Machined end on Compacts.
Reason? C-clip prone to breakage on the Compacts.

––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––-

USP/MK23/USPT Magazines:

MK23 magazines will fit in the MK23, USP Tactical .45F, and USP .45F.
USP Tactical .45F magazines will fit in the USP Tactical .45F and USP .45F
USP .45F magazines will fit in the USP Tactical .45F and USP .45F

USP Magazines cannot be modified to fit MK23's even with a baseplate swap due to the different lengths in the feedlips.  Don't do it.

~dead links removed May 2019, bcw107

Guys - I'd also like to point out Blue Beret Firearms as an excellent dealer. I couldn't be happier with my purchase. I'm going out of my way to spread the word because of such great experience. I'm very picky where I spend my $$ and excellent customer service goes a long way in my book. Gary and his team at Blue Beret are excellent!

I've purchased 10 mags from them so far. 5 x 12 round USPF .45 ACP mags and 5 x 13 rnd USP P2000 9mm mags. They're the real deal. Lightning fast response and shipping was excellent. I plan to buy additional goodies from them.

Anyhow:

http://www.blueberetfirearms.com

Ask for Gary.

~Dead link removed, May 2019, bcw107

add cdnninvestments.com for good new and used prices on mags.

You can drop the Bar-sto link.
I think they stopped making HK barrels a while ago.

Good prices and service at http://www.shootersplus.com also for HK pistols and magazines.

~dead link removed, May 2019, bcw107