I love my TM Type 89. I've added the dual fire selector lever and a top rail. Unfortunately, I should have waited for the folding stock version rather than jumping in both feet as soon as the standard one arrived at a UK retailer. But, hey ho, such is life.
With standard TM fps and typical TM accuracy it is an above average skirmishing tool. The three round burst is very nice. But, it seemed a bit underpowered compared to its M4 relatives. Now, I know fps isn't everything but a quick dismantle and reassembly with a more 'suitable' spring has it firing at an equivalent 345fps with 0.2bbs - I normally use biodegradables, nominally 0.25g but they actually weigh 0.243g.
Anyhoo, this upgrade had a detrimental effect on rate-of-fire and, since there is no way to get a 9.6v stick battery in the foregrip the only other solution was a lipo of some sort. I hunted quite extensively for some options and finally settled on a 7.4v Firefox 1,600mAh 20C from RSOV - probably not the best in quality but I can't say I've had any problems with them (that weren't caused by me that is). After charging up my standard 8.4V 1,500mAh NiMH battery and the new lipo we were ready to go. With the NiMH rof was around 640rpm (10.7rps) and with the Lipo around 775rpm (just under 13rps) - quite a difference I could get a 1,600mAh NiMH which would probably increase the 10.7rps by a slight margin but based on the fact that NiMH voltage drops of much quicker than lipo voltage I'm going to go with the lipos.
Unfortunately, due to the cable attachment, they don't fit in an MP5K or PDW - shame. They will fit my UMGs but will probably need some padding as they could rattle about. Overall though I'm very impressed with the Firefox lipos which were $17.99 + postage ($6 if you order just one).V
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