21480 pacific boulevard l4lkbuffer spring with brake rings compression spring, outside compression...

21480 Pacific BoulevardSterling, VA 201 6-890366-8903 l4lK

Illustration #

1 HK21 E, Complete2 Assembly Groups3 Receiver Group4 Bolt Group5 Recoil spring guide rod assembly6 Trigger Group7 Buttstock8 Barrel9 Belt feed unit10 Bipod11 Accessories12 Special tools, gauges and fixtures

HECKLER & KOCH, INC.Federal Operations Department

1998 Parts ListHK21 E

Description

Tel. (703) 450-1900FAX (703) 450-8160

Please refer to the current HK US Government & Law Enforcement Dealer Price List for a complete

listing of accessories, cleaning and instructional materials, and miscellaneous items for HK products.

February 1998

Illustration 1

HK21 E, Complete,

5 6-

?Icl0

09

8

HK2lE

Machine Gun HK21 E, CompleteIllustration 1

Item # Parts Description Part #

I 094000HK2lE, belt-fed machine gun, 7.62 X 51 mmNATO, shipped with sling, bipod, assault grip,muzzle cap, pistol grip cleaning kit, andoperators manual (1 barrel)

Carrying handle

5

Elbow spring, carrying handle

Axle, carrying handle

Assault grip, compl. (items 5,6,8,9,10).Old style, requires hex key (limited availability)Out of Production; see item## 228374 below.

Assault grip, compl., new style, requires no hexkey

222555

222553

222554

202513

228374

6 Locking plate, assault grip 202514

7 Safety washer, carrying handle 926005

8 Cylinder head screw, assault grip 928084

9 Spring washer, assault grip 928086

10 Spring ring, assault grip 929191

11 Bipod, compl., new style, adjustable legs 222755

+ Bipod, old style, non-adjustable legs 200150

+ Carrying sling, compl. 222515

+ Denotes item(s) not pictured in illustrationw Please call for price and availability 2

Revised 2/98

HK2lE

Machine Gun Assembly GroupsIllustration 2

HK2lE

Machine Gun Assembly GroupsIllustration 2


8 Locking pin, large for butt stock 200520

Receiver, compl. 222561

Bolt Group, compl. (w/o recoil spring guiderod), old style

Recoil spring guide rod assembly, compl.

Trigger group, compl.

Butt stock, compl.

Barrel, compl., 560 mm (22”)

Barrel, compl., 45Omm (17.72”) forHK 1 E/21 E

Belt feed unit, compl., old style 222788Belt feed unit, compl., new style 215089

+ Denotes item(s) not pictured in illustration* Please call for price and availability 4

222527

228149

222508

222600

22244 1

222511

Revised 2/98

HK2lE

Machine Gun Receiver GroupIllustration 3


1

+

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

Receiver, incompl., w/o parts

Rear sight, compl.,consisting of items 2 - 13

Rear sight aperature

Elevation adjustment screw

Windage drum

Rear sight support

Elevation drum, compl.

Adjusting ring

Plunger, detent

Compression spring, catch pin

Compression spring

Riveting pin, 3h9 X 26

Lock nut, M5 X 6mm

Slotted pin, 2.5 X 8mm

Washer for rear sight support

Toothed lock washer, A5.3mm

Clamping screw, rear sight mounting

Windage adjustment screw

Barrel safety catch, compl.

Elbow spring, barrel safety catch

+ Denotes item(s) not pictured in illustration%F Please call for price and availability 6

222562

222438

222405

221181

222409

222399

222435

222402

222403

222404

221175

929752

928688

928689

200371

922617

222236

200384

222343

222331

Revised 2/98

HK2lE

Machine Gun Receiver Group [cont.)Illustration 3


20

+

21

22

23

24

25

26

27

28

29

30

31

32

33

34

35

36

37

Washer, barrel safety

Forward assist, compl.,consisting of items 21 - 27

Closing plug

Knob, forward assist

Spring, forward assist

Forward assist pawl

Clamping sleeve, 2 X 12mm

Cylindrical pin, 2m 6x6

Cylindrical pin, 2.5 mm 6x6

Compression spring, forward assist

Guide bolt, forward assist

Safety washer, forward assist

Cocking lever support, compl., HK21 E

Cocking lever, compl., HK21 E

Elbow spring, cocking lever

Notched pin, cocking lever

Front sight blade

Clamping sleeve, front sight, 4 X 12mm

Cap, cocking lever tube, compl.

+ Denotes item(s) not pictured in illustratione Please call for price and availability 7

971746

222586

222566

222597

222567

222568

928690

971591

928679

222564

222565

914231

222341

221100

221141

221140

200838

922609

206497

Revised 2/98

Illustration 4

HK2lE Bolt GroupMachine Gun

2

-31

8

HK2lE

Machine Gun Bolt GroupIllustration 4

item # Parts Description Part ##

4

1

2

3

4

5

6

7

8

9

10

10

+

+

11

12

13

14

+T?

Bolt head carrier, compl.consisting of items 1 - 7

Bolt head carrier, incompl.

Bolt head locking lever

Compression spring for locking lever

Cylindrical pin, locking lever

Compression spring for disconnector

Bush

Disconnector, bolt, HK21 E

Firing pin, HK2lE

Firing pin spring, HK2lE

Locking piece, #17, 36’, HK21 E

Locking piece, #9, 40“‘ HK2lE(preferred over ##I 7)

Bolt head, compl., old styleconsisting of items 11 - 17

Bolt head, compl., new styleconsisting of items 11 - 17

Bolt head, incompl., old style

Extractor spring

Extractor, old styleExtractor, new style, polished

Cylindrical pin, extractor

Denotes item(s) not pictured in illustration

Please call for price and availability 9

222522

222521

200452

200453

200454

200383

221191

221192

222551

221188

228142

222102

221186

215087

221196

221198

221197 221197N

221199

Revised 2198

HK21 E

Machine Gun Bolt Group (cont.)Illustration 4


16

17

15 Locking rollers (marking)

l 7.92 mm (-8)

l 7.94 mm (-6)

l 7.96 mm (-4)

l 7.98 mm (-2)

l 8.00 mm (no marking)

l 8.02 mm (1)

l 8.04 mm (11)

Holder for locking rollers, wire

Clamping sleeve, for locking roller holder

+ Denotes item(s) not pictured in illustrationTT Please call for price and availability 10

222487

222486

200007

222232

200446

200447

200448

221125

200450

Revised 2/98

liK2lE

Machine GunRecoil spring guide rod assembly

Illustration 5

11

HK2lE

Machine Gun Recoil spring guide rod assemblyIllustration 5


1 Recoil spring guide rod, incompl. 221237

2 Recoil spring 228148

3 Guide rings 228147

4 Stop pins 221240

5 Riveting pins 221241

+ Denotes item(s) not pictured in illustrationTF Please call for price and availability 12

Revised 2/98

HK21 E

Machine Gun Trigger GroupIllustration 6

Item # Parts Descrbtion Part #

4

5

6

7

8

9

10

11

12

+

Pistol grip, plastic shell only

Safety/selector lever, left, w/ axle, compl

Safety/selector lever, right, compl.

Trigger mechanism, compl.consisting of items 4 - 33

Trigger housing, brazed

Holding jack

Elbow spring for holding jack

Axle for holding jack

Distance sleeve for catch

Elbow spring with roller, sear/catch

Catch

Axle for trigger, sear and catch

Disk

13

14

15

16

17

18

Trigger, compl.consisting of items 13 - 16

Trigger, welded, incompl.

Sear release latch, incompl.

El bow spring

Axle

Sear, compl.

Elbow spring, trigger

+ Denotes item(s) not pictured in illustrationf? Please call for price and availability 14

222507

225087

225089

222506

224448

224445

224426

224424

200504

200505

224422

200482

224419

224432

224436

224435

224434

224433

224439

224480

Revised 2/98

HK2lE

Machine Gun Trigger Group (cont.)Illustration 6


19

20

21

22

23

24

25

26

27

28

29

30

31

4

32 Axle for ejector, incompl. (w/o spring ring) 200480

33 Spring ring for ejector axle 20048 1

Catch lever

Axle

Shifter rod, compl.

Counter wheel, compl.

Spring rod

Compression spring for ejector

Eccentric bushing

Hammer, compl.

Compression spring

Axle for hammer

Bush

Compression spring for ejector

Ejector

Axle for ejector, compl.consisting of items 32 + 33

4 Denotes item(s) not pictured in illustrationz? Please call for price and availability

224425

224423

224429

224441

224421

224420

224418

224427

222639

200494

224996

221206

221207

200479

Revised 219815

HK21 E

Machine Gun ButtstockIllustration 7


3

4

5

6

7

8

9

10

11

12

13

14

15

Buttstock, incompl., plastic shell only

Back plate, compl.

Buffer assembly, compl., consisting ofitems 3 - 9, old style - round spring

Buffer assembly, compl., consisting ofitems 3 - 9, new sytle - flat spring

Buffer housing

Buffer bolt

Buffer spring with brake rings

Compression spring, outside

Compression spring, inside

Buffer bushing

Buffer closure screw

Disk

Toothed lock washer

Cylinder head screw

Toothed lock washer

Countersunk screw, self-locking, for buffer

Butt plate, rubber, compl.

+ Denotes item(s) not pictured in illustration%r Please call for price and availability 17

221222

221220

222603

222603N

222601

222602

200892

221229

221230

221345

221231

221224

922614

929877

922615

200543

221223

Revised 2/98

HK21 E

Machine GunBarrel

Illustration 8

18

HK21 E

Machine Gun BarrelIllustration 8


1 Barrel, incompl., 22”, 1 in 12” twist 222432

2 Clamping sleeve, barrel grip 92976 1

3 Grip, barrel, HK2lE 222493

4 Protective lining, barrel grip 221248

5 Cylindrical pin, 11 X 12 mm 928141

6 Locking lever, compl. 221242

7 Elbow spring, barrel locking lever 221247

8 Countersunk screws, M6 X 12 mm 928142

9 Screw sockets 221246

10 Inlay 221245

11 Grip holder 221244

12 Setbolt 222352

Flash hider, compl.,consisting of items 13 + 14

200368

13 Flash hider, incompl. 200369

14 Retaining spring, flash hider 200370

+ Denotes item(s) not pictured in illustration¶F Please call for price and availability 19

Revised 2/98

HK21 E

Machine Gun Belt feed unitIllustration 9

20

HK2lE

Machine Gun Belt feed unitIllustration 9


Belt feed unit housing, compl.,consisting of items 1 - 61

1

4

Belt feed unit housing, incompl. 222458

Cartridge stop, compl.,consisting of items 2 - 5

Cartridge stop

Cartridge stop pin

Compression spring, cartridge stop

Clamping sleeve, cartridge stop pin,lX5mm

6

7

8

9

10

11

12

+

Toothed lock washer, 5.3 mm

Binding screw

Elbow spring, locking lever

Locking lever

Circlip, 3.2 mm

Control bolt

Clamping sleeve, control bolt

Pawl holder, compl.,consisting of items 13 - 17

13

14

15

16

Pawl holder, incompl.

Pawl

Compression spring, paw1

Axle, pawl

4 Denotes item(s) not pictured in illustration* Please call for price and availability 21

222457

222502

222503

222504

221290

928735

922617

200372

221271

222505

926005

221272

929091

222092

221300

222093

221302

221303

Revised 2/98

HK2lE

Machine Gun Belt feed unit (cont.)Illustration 9


17

18

+

19

20

21

22

23

24

25

26

27

28

+

Clamping sleeve, 2 X 8 mm

El bow spring, follower

Follower, compl.,consisting of items 19 - 22

Follower, brazed, incompl.

Roller

Roller axle

Circlip, 3.2 mm

Compression spring, stud

Stud

29

30

31

32

33

34

Cartridge feed lever

Axle, pawl/follower/stud/cartridge feed lever

Circlip, 4.0 mm

Circlip, 5.0 mm

Slide, compl.,consisting of items 29 - 32

Slide

Slide bolt

Compression spring, slide bolt

Circlip, 2.3 mm

Guide pin

Clamping sleeve, 2.5 X 10 mm

+ Denotes item(s) not pictured in illustratione Please call for price and availability 22

925001

221276

221259

221295

221296

221297

926005

221294

221275

221273

221277

971748

97 1749

222365

222366

221293

221294

971746

22A267

922608

Revised 2198

HK21 E

Machine Gun Belt feed unit (cont.1Illustration 9

item # Parts Description Part #

35

36

37

38

39

40

41

42

43

44

45

+

Compression spring, slide

Guide pin

Circlip, 3.2 mm

Control rings

Compression spring, pawl

Pawl

Pressure bolt, control rings

Feed shaft

46

47

48

49

50

Sprocket wheel

Circlip, 8.0 mm

Compression spring, stud

Catch, compl.,consisting of items 46 + 47

Catch, incompl.

Clamping sleeve for catch

Catch lever

Pin for catch & catch lever

221269

221268

926005

222357

221279

222358

222359

222360

222259

971751

221269

221257

Clamping sleeve, pressure bolt retaining,I .5 X 8 mm

221291

925001

222355

221266

971919

51 Pressure bolt, catch 221263

52 Compression spring, pressure bolt 221261

53 Cylindrical pin, 3 mm 929296

+ Denotes item(s) not pictured in illustration

W Please call for price and availability 23Revised 2/98

HK2lE

Machine Gun Belt feed unit (cont.)Illustration 9


54

55

56

57

58

59

60

61

+

62

63

64

65

66

67

68

Compression spring

Clamping sleeve, 2.5 X 14 mm

Shift lever

Bearing plug

Circlip, 4.0 mm

Belt inlet

Cylinder head screw, belt inlet

Spring washer for #222276,4 mm

Cartridge guide, compl.,consisting of items 62 - 65

Cartridge guide, welded, incompl.

Catch bolt, cartridge guide

Compression spring, catch bolt #221305

Clamping sleeve, catch bolt, 2 X 8 mm

Socket pin, compl.

Clamping sleeve, socket pin retaining,2 X 1 0 m m

Clamping sleeve, 2 X 5 mm

+ Denotes item(s) not pictured in illustration* Please call for price and availability 24

221262

926015

222361

222362

971748

222593

222726

971977

221252

221304

221305

221306

925001

222500

928406

925000

Revised 2/98

HK21 E

Machine Gun Bipod (Adjustable)Illustration 10

25

HK21 E

Machine Gun BipodIllustration 10

Item #

+

Parts Description

Head bearing, compl.,consisting of items I - 6

Part #

222756

1 Head bearing, incompl. 222757

2 Bearing box 222758

3 Stop pin 222759

4 Compression spring, spring bolt 222760

5 Spring bolt 222761

6 Clamping sleeve, spring bolt 929617

Bipod leg, right, compl., 222762 consisting of items 7, 8, 10 - 12

Bipod leg, left, compl.,consisting of items 7, 9 - 12

222773

7 Bipod leg, incompl. 222763

8 Spur, right, compl. 222764

9 Spur, left, compl. 222774

IO Catch lever, bipod leg 222766

11 Compression spring, catch lever 222765

12 Clamping sleeve, catch lever 928696

13 Elbow spring, bipod legs 222776 tT

14 Axle, bipod leg 222777

15 Circlip, 6 mm 971750

+ Denotes item(s) not pictured in illustration= Please call for price and availability 26

Revised 2198

HK2lE

Machine Gun AccessoriesIllustration 11

G _._---,A -. ,d/-

---.,

. ’

_ ..----.

27

7

HK21 E

Machine Gun AccessoriesIllustration 11


A

B

+

C

D

+

+

+

E

F

G

G

H

+

I

J

+

+=

Bipod (old style, non-adjustable legs)

Bipod (new style, adjustable legs)

Tripod, Ground mount

Mount, Field, Model 1102

Scope mount (w/o rings)

Scope mount (w/ 30 mm rings & mountingscrews)

200150

222755

225187

208720

224592

700400

30 mm Holding rings for mount w/ mountingscrews (set of 2 rings complete)

700571

Beta front sight with tritium dot (includesring)

700126

Carrying sling

Blank firing barrel, 7.62 X 51 mm NATO,with carrier with sling

222515

222725

Spare barrel carrier for HK21 E 22” barrel

Spare barrel carrier for 17.7”HKI 1 E/21 E/23E barrels

222789

222699

Carrying handle

Sight adjustment tool

Assault grip (New style, requires no hexkey)

222555

300009

228374

Back plate assembly, compl. 222648

Ammo belt, 50 round, DMl non-disintegrating belt, 7.62 X 51 mm NATO foruse with old-style belt feed mechanisms

928683


Please call for price and availability 28Revised 2/98

HK21 E

Machine Gun Accessories (cont.)Illustration 11


4

4

4

4

K

L

M

50-round drum magazine for HKI 1 E(limited availability)

Cartridge case deflector with detachablecollection bag

Belt starter tab for DMl belt

Belt starter tab for DM6/M 13 belt

Belt box, 7.62 X 51 mm NATO, 100 rounds

Muzzle cap, plastic

Magazine exchange unit, 7.62 X 51 mmNATO (includes magazine adapter, boltgroup, recoil spring assembly)

Butt stock, compl.

Magazine, 20-round, 7.62 X 51 mm NATO

Manual, Operators, HK21 E/23E

Manual, Maintenance & Repair

Manual, Aiming with HK Small Arms

Cleaning kit, 7.62 mm/.30 cal

Pistol grip cleaning kit, compl.

Barrel, compl., 45Omm (17.72”) forHKllE/2lE

4 Denotes item(s) not pictured in illustrationTT Please call for price and availability 29

228584

231872

928188

928144

222448

211013

222794

222600

214874

927815

927870

926153

701960

222510

222511

Revised 2/98

HK2lE Illustration 12a

Machine Gun Special tools, gauges and fixturesfor the HKI 1 E/21 E Machine Gun

30

HK2lE Illustration 12b

Machine Gun Special tools, gauges and fixturesfor the HKI I E/21 E Machine Gun

HK21 E


Illustration 12c

-- .‘-- ----- .Be.

%

32

HK21 E


Illustration 12d

33

HK2lE


Illustration 12e

34

Illustration 12HK21 E



1

2

3

8

9

10

11

12

13

14

15

+=

Straightening mandrel for cocking leverhousing (for straightening cocking leverhousing)

Go and symmetry gauge (to check shapeand symmetry of receiver)

Straightening mandrel for receiver (forstraightening receiver)

Straightening mandrel for front sight holder

Chamber cleaning rod

Chamber cleaning brush

Cleaning kit, 7.62 mm, compl.

Set of calibre plug gauges:7.64, 7.65, 7.67, 7.68 mm (formeasurement of bore diameter)

Rod for item # 7 above

“No go” calibre plug gauge, 7.69 (formeasurement of maximum bore diameter)

Cleaning rod, pull through style

Cleaning wick (chamber/bore cleaning)

Cleaning rod, bore

Wool pull-through (bore cleaning)

Extension rod, bore, for ## 12 above

Feeler gauge (for measurement of bolt gap)



318603

318939 u

300574

300016

300007

300008

701960

300344

300345

307713

300751

962018

313273

961222

314475

329830

Revised 2/98

HK21 E Illustration 12

Machine Gun Special tools, gauges and fixturesfor the HKI 1 E/21 E Machine Gun (cont.)

Item # Parts Description Part ##

16

17

18

19

20

Limit gauge for firing pin protrusion

Extractor protrusion gauge

Bore scope

Sight adjustment tool

Universal spanner (remove and install flashhider)

21

22

23

24

25

26

27

28

29

30

31

32

+

Assembly plug (assembly of trigger group)

Assembly spanner for buffer closure screw(buffer assembly/disassembly)

Special nut with grease nipple (removebore obstructions)

Grease gun (remove bore obstructions)

Extracting tool for ruptured cartridge cases

Spring fitting tool

Combination pliers

Plastic hammer

Hammer 300 g

Special screwdriver

Fork screwdriver 12 X 200 (barrel)

Set of screwdrivers:

Screwdriver 7 X 140 (Buttstock)

+ Denotes item(s) not pictured in illustration= Please call for price and availability 36

326172

3 18604

954610

300009

312387

330025

321378

955010

964067

955011

330024

957298

957422

957417

318615

324864

952656

Revised 2/98

HK21 E Illustration 12



4

4

33

34

35

+

4

+

+

+

36

37

38

39

4

+

Screwdriver 13 X 200 (Buffer, buttstock)

Screwdriver 3.5 X 90 (Carrying handle)

Tap wrench (to hold reamers 35.1 - 35.5)

Lathe dog, 15 mm (assembly/disassemblyof recoil spring guide rod assembly)

Set of hand reamers:

Hand reamer 13 mm H7 DIN 206

Hand reamer 7 mm H7 DIN 206 (Lockingpin holes)




Thread-cutting die DIN 223 M 15 X 1 (formuzzle threads)

Cutting die support size 5 (to hold # 36above)

Hexagonal socket wrench

Set of pin punches:

Pin punch, 6 mm

Pin punch, 5 mm (barrel grip/magazinerelease lever)

Pin punch, 4 mm (Front sight, cocking leveraxle, barrel grip, bolt carrier locking lever)

Pin punch, 3.5 mm

952658

952653 tr

315917 f?

9 5 6 8 6 0

953583

953513

953502

953498

953476

951060

955427

957352

958428

957315

958215

957942


Please call for price and availability

Revised 2/9837

HK2lE Illustration 12

Machine Gun Special tools, gauges and fixturesfor the HKI 1 E/Z1 E Machine Gun (cont.)


Set of drift punches:

Drift punch, 2.4 mm (magazine attachment,HKI 1 E only)

Drift punch, I .8 mm (rear sight, holder forlocking roller)

Drift punch, I .4 mm (disconnector/boltrelease)

Drift punch, 0.9 mm

Set of dowel pin holders:

Dowel pin holder, 0.1 mm


Dowel pin holder, 2.2 mm (rear sight,holder for locking rollers)

Dowel pin holder, 2.8 mm (magazineattachment, HKI 1 E only)

Dowel pin holder, 3 mm



Dowel pin holder, 5 mm (magazine releaselever, HKl 1 E only)

Set of allen wrenches:

Allen wrench SW5 DIN 911, 5 mm (barrel)

Allen wrench SW4 DIN 911,4 mm

Allen wrench SW3 DIN 911, 3 mm

Set of circlip fitting tools:

Circiip fitting tool GRS 1.9 DIN 6799

Circlip fitting tool GRS 2.3 DIN 6799




957311

957310

957309

957308

318267

318268

301105

300591

318264

318271

300767

318262

957430

957429

957428

955772

955545

955544 u

Revised 2/98

HK2lE Illustration 12



+

+

44



Center punch (barrel, recoil spring guiderod)

955605 =

955606 e

957323

( ) - indicates maintenance procedure this item used for.

+ Denotes item(s) not pictured in illustrationTT Please call for price and availability 39

Revised 2/98

21480 pacific boulevard l4lkbuffer spring with brake rings compression spring, outside compression...

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