Trying to sort out the different versions of MP9/TMP/SPP

[ccyg8774]

This started when was looking for parts for a broken Hard-kick system TMP, and run across many versions of TMP/MP9/SPP/TP9, with interchangeable or not interchangeable parts. I got really confused during the search but things seems to cleard out a bits now, so I decided to write my findings and my confusions, hoping someone may help me to clear the confusions further more, and hopefully this can help someone in a similar situation in the future.

May contain errors.
May contain misunderstanding from the Japanese sites as I can't really read Japanese, only the Kanji (Chinese characters in Japanese writing) and the pictures.
Still working on the list and the descriptions.
Things that I am not sure are marked in red, but other parts may have error, too.
Any inputs are welcomed to help complete, correct and confirm the facts and versions in this list.
Most of the reference links are dead (2019-06-03)

1. Pre-Hardkick system versions [1] [2]
Have a TMP, may not have a SPP. No build-on stock, but can use the attached stock.
The magazines have no open slots to see the BB in the magazine. [3]
Only have long magazines. [3]
Discontinued.

2. Hard-kick system version.
Have a TMP and SPP. No build-on stock, but can use the attached stock.
The magazines have open slots on the side of the magazine. [3]
Can use some internal parts, include the loading nozzle and the Hop-up rubber for KSC MP9/TP9 Japan Version. (Confirmed by testing)
Magazine is interchangeable to KSC MP9/TP9 Japan Version [5] (Confirmed by testing)
The magazines may be modified to work in a Pre-Hardkick system TMP by changing the top seal/gas gasket [3]
The Hop-up rubber and chamber is slightly larger than the KSC MP9/TP9 Japan Version. The KSC MP9/TP9 Japan Version Hop-up rubber will still work, but the chamber will not fit without modification. (Confirmed by testing)
Discontinued.

3. KSC MP9/TP9 Japan Version [4]
Have a MP9 (build-on stock), and a TP9 (no front grip but a rail, no build-on stock, but can be installed with a MP9 stock).
The magazines also have open slots on the side of the magazine. [5]
Magazine is interchangeable to Hard-kick system TMP [5]
The loading nozzle, is different from the later NS-2 or System 7 versions. [6]
The nozzle and many other internal parts are interchangeable to Hard-kick system TMP/SPP. (Confirmed by testing)

4. KWA NS2 system MP9/MP9R
Both have build on stock, MP9R do not have a front grip but a rail.
The magazines have open slots on the front of the magazine.
The magazines are not interchangeable to previous versions.
Most internals are not interchangeable to previous versions.

5. KSC System-7 system MP9/MP9R (Taiwan Version)
Essentially the same as the the KWA NS2 system MP9/MP9R but the releasing valve is different.
Different from the KSC MP9/TP9 Japan Version
The magazines have open slots on the front of the magazine.


Reference:
[1] ＫＳＣ・スタイアー　ＴＭＰ
http://www.interq.or.jp/rock/nag-777/TMP.html (Site in Japanese)

[2] 394 KSC Steyr tmp
http://misojikousyou.cocolog-wbs.com...c-steyr-t.html (Site in Japanese)

[3] KSC TMP/SPP takedown and repair guide
http://www.employees.org/~moskit/dp/...tmp_guide.html

[4] KSC official site, KSC エアガン・モデルガン・電動ガン専門メーカー
http://www.ksc-guns.co.jp/pro.html?/..._id=12&disp=on (Site in Japanese)

[5] KSC official site, インターネットショッピング
http://www.ksc-guns.co.jp/ksc_cart/k...%83Z%83T%83%8A (Site in Japanese)

[6] Several MP9 related blog entries on the blog ＜高度機密指令＞　遂行中
http://koudokimitsusirei.militaryblog.jp/c4532.html (Site in Japanese)