don't think I did any Level 1 variants when I first posted so here's a stab at making a couple.
UrbanMech UM-R1D-I
Base Tech Level: Introductory (IS)
Weight: 30 tons
BV: 679
Cost: 2,068,625 C-bills
Source: TRO 3039 - Star League
Role: Ambusher
Movement: 4/6/4
Engine: 120
Heat Sinks: 10
Gyro: Standard Gyro
Internal: 51
Armor: 96/105
Internal Armor
----------------------------------------
Head 3 9
Center Torso 10 16
Center Torso (rear) 4
Right Torso 7 10
Right Torso (rear) 3
Left Torso 7 10
Left Torso (rear) 3
Right Arm 5 10
Left Arm 5 10
Right Leg 7 14
Left Leg 7 14
Weapons Loc Heat
------------------------
Large Laser RA 8
Small Laser LA 1
Small Laser LA 1
Small Laser LA 1
Small Laser LT 1
Small Laser LT 1
Small Laser RT 1
Small Laser RT 1
Flamer HD 3
UrbanMech UM-R1D-II
Base Tech Level: Introductory (IS)
Weight: 30 tons
BV: 745
Cost: 2,194,725 C-bills
Source: TRO 3039 - Star League
Role: Ambusher
Movement: 4/6/4
Engine: 120
Heat Sinks: 10
Gyro: Standard Gyro
Internal: 51
Armor: 103/105
Internal Armor
----------------------------------------
Head 3 9
Center Torso 10 16
Center Torso (rear) 4
Right Torso 7 10
Right Torso (rear) 3
Left Torso 7 10
Left Torso (rear) 3
Right Arm 5 10
Left Arm 5 10
Right Leg 7 14
Left Leg 7 14
Weapons Loc Heat
-------------------------
SRM 6 RT 4
SRM 6 LT 4
Medium Laser RA 3
Medium Laser LA 3
Small Laser HD 1
Ammo Loc Shots
------------------------
SRM 6 Ammo RT 15
UrbanMech UM-R1D-III
Base Tech Level: Introductory (IS)
Weight: 30 tons
BV: 707
Cost: 1,634,750 C-bills
Source: TRO 3039 - Star League
Role: Ambusher
Movement: 3/5/3
Engine: 90
Heat Sinks: 10
Gyro: Standard Gyro
Internal: 51
Armor: 103/105
Internal Armor
----------------------------------------
Head 3 9
Center Torso 10 16
Center Torso (rear) 4
Right Torso 7 10
Right Torso (rear) 3
Left Torso 7 10
Left Torso (rear) 3
Right Arm 5 10
Left Arm 5 10
Right Leg 7 14
Left Leg 7 14
Weapons Loc Heat
-------------------------
AC/5 RA 1
Medium Laser LA 3
Medium Laser LT 3
Medium Laser LT 3
Ammo Loc Shots
-----------------------
AC/5 Ammo RA 20