Parts Illustration
 

    

1) Right-hand hammer
2) Left-hand hammer
3) Hammer stirrup
4) Main spring
5) Main spring plunger
6) Sear
7) Sear spring
8) Right-hand trigger
9) Left-hand trigger
10) Trigger spring
11) Top lever
12) Extractor
13) Cocking slide
14) Bolt lever, with roll		 15) Square top bolt
16) Round top bolt
17) Roll
18) Roll pin
19) Top lever spring
20) Trip, spring and pin
21) Unhooking slide
22) Cocking crank
23) Cocking hook
24) Cocking hook pin and spring
25) Cocking hook screw
26) Safety pin
27) Unhooking pin and spring		 28) Safety lever and jacket
29) Safety slide
30) Safety slide spring
31) Sear Pin
32) Bushing for tang screw
33) Fore end lock, complete
34) Fore end lever
35) Fore end tumbler
36) Fore end lever spring
37) Guard bow
38) Trigger plate
39) Fore end iron

Click on image to enlarge:

Watertable & Flat proofs

The frame size is marked on barrel lug
(click on picture for larger view)

The weight of the barrels is marked on the flats (weighed before striking).
(click on picture for larger view)

The serial number is marked on the watertable
(click on picture for larger view)

The grade is marked on the watertable
(click on picture for larger view)

 

  

The type of steel used for the barrels is found on the rib.
(click on picture for larger view)

 

Special Notice: On the early lifters, the serial number is on the water table, the forend iron, the trigger guard and the side of the barrel lug.  The number on the barrel flats is the Order Number, not the serial number.

Hammerless Barrel Types by Parker Grade
 
Parker A-1 Whitworth fluid pressed steel
Parker AAH Whitworth fluid pressed steel
Parker AH Acme Steel
Parker BH Acme Steel
Parker CH Acme Steel - Bernard Steel (dam.)
Parker DH Titanic Steel
Parker GH Parker Special Steel
Parker PH Parker Steel
Parker VH Vulcan Steel
Parker Trojan Trojan Steel

Frame Sizes by Gauge
 
Frame Size Gauges Used
000 28, .410
00 28, .410
0 16, 20, 28
1/2 12, 16, 20
1 10, 12, 16, 20
1 1/2 12, 16, 20
2 10, 12, 20
3 10, 12, 16
4 10
5 8, 10
6 8, 10, 12
7 8, 10
Source:  The Parker Story - Vol. II

Barrel Summary Chart
 
Type of Barrel Estimated Quantity Produced
Laminated 2,682
Decarbonized 889
Damascus 50,869
Twist 5,122
Plain Steel 358
Plain Twist 49,317
Bernard 494
Whitworth 235
Titanic 9,964
Vulcan 78,677
Acme 3,245
Parker Special 4,291
Trojan 33,005
Peerless 70
Parker 1,339
Source:  The Parker Story - Vol. II - Page 508
 

Hammer gun Illustration