The Battle Fury Omnimech, in all its battlefield prowess, is 
vulnerable in the use of the bulky 320XL engine.  While 
this allows it to carry many weapons, the price for this 
package  is over 18 million C-bills, a costly penny indeed.  
So Pheonix Armaments Limited devised a new Omnimech 
based on the variants of the Battle Fury except that it 
mounts an Strand 255 standard engine.  This makes the 
mech cheaper.  However, to mount sufficient weapons to 
compete with the Battle Fury, the Top speed was reduced 
to 54 kph.  

Variants of the Shirotachi are essentially the same as the 
Battle Fury.  In place of the bulky XL engine from the 
Battle Fury, dual heat sinks are in fixed installations in the 
right and left torso.  While the presence of ammo on the 
Shirotachi gets pilots jittery, Dual CASEs in both torsos 
ensure that the mech can continue to fight in the event of 
an ammo explosion.  The added benefit of mounting a 
Standard Engine is the icreased battlefield longevity.  The 
Shirotachi has been proved to survive after the loss of 
both arms and torsos and still be a viable opponent.

Deployment:
The SHIR-O-1T Shirotachi Omnimech has served in many 
engagements in the ongoing inner-sphere / clan wars.  
One instance occured in the recent Jade Falon attack on 
the planet Coventry.  Stationed with the a garrison unit on 
the planet, the Shirotachi suddenly came under attack by 
a Night Gyr Prime.  The intense ERPPC fire from the clans 
combined with the Ultra Autocannon fire began to dig 
deep furrows into the torsos and arms of the Shirotachi 
Primary.  When in range, the Shirotachi responded in kind. 
 The outcome of the ensuing battle saw the complete 
destruction of the Clan Night Gyr.  The Shirotachi, 
however, escaped doom missing both of its arms.  The 
Right Torso's internal structure collapsed caving in on the 
Double Heat Sinks.

Variants.  
The Primary Variant is a direct copy of the Battle Fury's 
Prime variant with an added ER medium laser in the 
Center Torso.
The Alpha variant is another variant borrowed from the 
BF-1-O.  The two LRM-15s and two SRM-6s are mounted 
in the arms to provide Long and Short Ranged misile 
support.  2 Large Lasers and 6  medium lasers are added 
in the event of ammo shortages.  
Configuration Bravo is equipped with a C3 Master 
Computer to coordinate C3 lances and companies alike.  
For firepower, a Gauss Rifle and 2 ER Large Lasers are 
added for Long Range.  4 Medium Pulse Lasers are 
mounted in the Left Torso to round out the Bravo Variants 
weaponry.
The Charlie variant is basicaly a slower, more heavily 
armed PTR-4D Penetrator.  2 ER Large Lasers are 
backed up by 6 medium lasers.  2 Streak-6s are backup 
weapons when ranges become not so distant.  Each 
launcher is supplied with a ton of ammo apiece.  However, 
since Streak technology is extremely ammo efficient, it is 
rare that each ton will become drained
The Delta Variant is a departure from the Battle Fury in 
that it is completely ammo dependent.  A Gauss Rifle is 
mounted in the Right Arm supplied with 3 tons of ammo.  
As Secondary weapons two MRM-30's are mounted in 
each torso.  Each MRM-30 is supplied with 16 shots 
apiece, that's two tons.