New Year Tech Quiz ... well kinda

[Alan Smith]

Hi everyone,

So here’s a New Year quiz for you all! (actually it’s some questions I have dressed up as a quiz for fun! no prize just bragging rights for the most knowledgeable)

1 - I’ve found some bits marked as “mag spares” see attached pictures, parts numbered 1-43 can you identify the parts?

2 - I presume 21 -24 are the same part but whats the difference were they for different markers?

3 - what’s the functional difference between numbers 25 and 26?

4 - what’s the functional difference between numbers 33, 34 and 35?

5 - why is there a different retainer on 42 and 43?

6 - What’s the best way to protect ageing spare parts both orings and hard parts to prevent them going bad?

Answers I’ve been able to put together are in the next post!

Thanks in advance,


Al...

IMG_7060.jpg

IMG_7057.jpg

[Alan Smith]

Answers consolidated here:

Questions:
1 -
2 -
3 -
4 -
5 -
6 - "to keep orings fresh is to keep them out of the light and to keep them sealed in something airtight. A military metal ammo can in my basement...cool, dark, airtight. The orings I take with me in my gear to games are kept in contact lens cases. They can be segregated and organized and kept in something that keeps them away from light and open air. As far as metal parts, keep them in something airtight and coated in light oil or even a light grease. Preventing corrosion is your goal here.
As far as metal parts, keep them in something airtight and coated in light oil or even a light grease. Preventing corrosion is your goal here.” Thanks JKR great answer!


Parts Identification:
1 -
2 - 018 - RT/classic/mini barrel O-Ring 90 duro urethane
3 - 018
4 - 015
5 - 015 - asa tank O-Ring 90 duro urethane
6
7
8
9 - classic reg seat oring (not AGD)
10 - classic reg seat oring
11 - 007
12 - 006 - X/RT Reg. Valve Pin O-rings 90 duro urethane
13 - 006 - classic/mini Teflon on/off O-Ring
14 - 006
15 - 116 - classic/mini Reg. Body O-ring 90 duro urethane
16
17
18 - SIZE 012 - X/RT/classic/mini Reg. Piston O-rings 90 duro urethane
19 - 010 - X/RT/classic/mini power tube O-Ring (X on off bottom) 90 duro urethane
20 - 009 - RT Field Strip Banjo O-rings 90 duro urethane
21 - Classic/mini bolt bumper
22 - classic bolt bumper
23 - Retro bolt bumper
24 - Modified retro bolt bumper

25 - AIR reg pin valve
26 - AIR reg pin valve
27 - RT on/off pin
28 - AIR reg cone spring
29 - mag safety spring
30
31
32
33 - moded on/off top
34 - on/off top
35 - on/off top
36 - classic velocity lock nut
37 -
38 - RT safety
39 - classic safety
40
41
42 - AIR valve shim stack
43 - AIR valve shim stack

[JKR]

6 - What’s the best way to protect ageing spare parts both orings and hard parts to prevent them going bad?

The best thing to keep orings fresh is to keep them out of the light and to keep them sealed in something airtight. I have some of my orings in a military metal ammo can in my basement...cool, dark, airtight. The orings I take with me in my gear to games are kept in contact lens cases. They can be segregated and organized and kept in something that keeps them away from light and open air.


As far as metal parts, keep them in something airtight and coated in light oil or even a light grease. Preventing corrosion is your goal here.

[athomas]

I'll try to add a couple in a hurry:

Answers consolidated here:

1 -
2 - 018 - RT/classic/mini barrel O-Ring 90 duro urethane
3 - 018
4 - 015
5 - 015 - asa tank O-Ring 90 duro urethane
6
7
8
9 - classic reg seat oring (not AGD)
10 - classic reg seat oring
11 - 007
12 - 006 - X/RT Reg. Valve Pin O-rings 90 duro urethane
13 - 006 - classic/mini Teflon on/off O-Ring
14 - 006
15 - 116 - classic/mini Reg. Body O-ring 90 duro urethane
16
17
18 - SIZE 012 - X/RT/classic/mini Reg. Piston O-rings 90 duro urethane
19 - 010 - X/RT/classic/mini power tube O-Ring (X on off bottom) 90 duro urethane
20 - 009 - RT Field Strip Banjo O-rings 90 duro urethane
21 - Classic/mini bolt bumper
22 - classic bolt bumper
23 - Retro bolt bumper
24 - Modified retro bolt bumper
25 - AIR reg pin valve
26 - AIR reg pin valve
27 - RT on/off pin
28 - AIR reg cone spring
29 - mag safety spring
30
31
32
33 - moded on/off top
34 - on/off top
35 - on/off top
36 - classic velocity lock nut
37 - classic velocity adjuster (used with velocity lock nut) - not sure on this now
38 - RT safety
39 - classic safety
40
41
42 - AIR valve shim stack
43 - AIR valve shim stack

[Alan Smith]

Thanks you great answers so far anymore info. on the missing answers/questions please?

Also I can see how the "classic velocity lock nut" 36 would fit on the back of the valve but the "velocity adjuster" 37 has different threads, how do they work together?

[vintage]

the velocity lock nut is for field rental mags, you adjust the velocity where you want it then screw the "cap" on over the adjuster.

[athomas]

The velocity adjuster was a tournament lock. You were required to have them on any mag used for a tournament. It prevented tampering with the velocity in the game. Without it you could manually adjust the velocity by degassing the mag and turning the adjuster with your fingers. By using this type of lock, the velocity was adjusted and then the cap was put on over the adjuster and tightened in place, preventing any further adjustments even with tools.

Further looking at the pictures, I'm not so sure that #37 is part of the adjuster, even though it does look to be the correct shape. The threading looks too coarse. The outer threading should be the same as the fine threads on the inside of the valve at the back, which is the same fine threads seen on the cap.