Homebrew Rules

Gun creation system

by The UK Cyberpunk Thinktank




This allows the creation of a variety of new and unusual firearms, by a simple option system to use, follow the steps one by one, choosing one of the choices and noting down the stats given.


Step 1:

Ammo type    
Frame size WA Light Medium Heavy Very heavy Concealability Cost
Pocket -2 10 7 4 2 P 150
Small -1 15 8 5 3 J 250
Medium 0 20 15 8 5 J 350
Large +1 25 20 10 7 J/L 450
Ammo can vary +/- 5 5 2 1    


Step 2:

Mechanism ROF Ammo Notes
Break open #barrels * Can fire all barrels at once (1 or 2 barrels)
Revolver +0 6  
Bolt action 1 - Usually target pistols
Gas Automatic +0 -  
Gas Automatic MP +0 - *
Electric +0 - Electric motor driven and never jams
Electric MP +5 - *
*Machine Pistols can fire at normal ROF with single shots, fire 3 round bursts or full auto at MP ROF


Step 3:

Propellant Ammo Notes Ammo Cost
Cased rounds - Metal or plastic cased -
Caseless rounds +20% MP's get ROF+5 -
Plastique - High power. Damage +D6 x2
Binary liquid +50% Need mag+bottles to reload. Big muzzle flash -
ETC -20% damage +2D6, ROF=1 Max x5
NB! Gas Powered and Gauss Weapons not included  


Step 4:

Caliber Damage PEN WA NOTES
       
Light
.22 short D4 0 +2  
.22 long D6 0 +2  
.22 long rifle D6 0 +2  
.22 magnum D6+1 0 +2 ROF-1
5mm D6 0 +2  
6mm D6+1 0 +2  
.25 ACP D6 0 +2  
.32 D6+2 A +2  
7mm D6+2 A +2  
       
Medium
.380 auto 2D6-1 A +1 aka 9mm short ROF+1 (max=3)
.38 2D6 A +1  
.38 special 2D6 A +1 bullet counts as a 'Tumbler'
8mm 2D6 A +1 ROF +1 (Max=3)
9mm 2D6+1 A +1 aka 9mm parabellum
9mm AE 2D6+2 A +1  
10mm Auto 2D6+3 A +1  
.40 S&W 2D6+3 A +1  
       
Heavy
.41 AE 3D6 A 0  
.408 S? Tac 3D6+2 A 0  
.45 ACP 3D6 A 0 not 2D6+2 as in CP2020
.357 Magnum 3D6 A 0 not 2D6+2 as in CP2020
11mm 3D6 A 0  
       
Very heavy
12mm 4D6 B -1  
.44 Magnum 4D6+1 B -1  
.454 cascull 4D6+3 B -2 Ammo -1
.50 AE 4D6+2 B -1  
.50 Magnum 5D6 B -3 Ammo -1
.577Webley 5D6+1 B -3 Ammo -1
14mm 6D6 B -4 Ammo -2
       
       
AE = Action Express
ACP = Automatic Colt Pistol
S? = Smith And Wesson

Notes:
.45 and .357 have been upgraded for FID use as the CP2020 figures where too low. The 10mm Auto was designed as a intermidiate between .45's power and 9mm's accuracy and large mag space. This sugested that .45 did more than 2d6+2. This is a personal modification, and can be ignored at will.
Penetration values are on the HARDWIRED quick armour system.


Step 5:

Calibre Base ROF Notes Machine Pistols MP Notes
Light 3 30  
Medium 2 3 with heavy frame 20  
Heavy 1 2 with heavy frame 15  
Very heavy 1 10 Not recomended


Step 6:

Quality Reliability WA Mod MP ROF
Low UR -1 or 0 -5
Normal ST 0 0
High VR 0 or +1 +5


Step 7:

Cost modifires
     
     
Ammunition If uses different class of ammo.
Pocket frame is same size as light ammo etc.		 +50  
     
     
Mechanism Electric +75  
Other +0  
     
     
Quality UR -50  
ST +0  
VR +100  
     
     
Unreliable guns can be made Dangerous.
10% chance of jam/mailfunction/critical faliure
barrel burst/pin snaps/explotion etc.
Cannot be smartgunned		 x.5  
     
     
WA mod -1 -50  
0 +0  
+1 Normal mechanism
+1 Bolt action mechanism		 +100
+50		  
     
     
MP 3 rd burst only +50  
3 round and fulll auto +100  
Full auto only +75  
     
     
Smartgun +2 to hit x2  
     
     
Material Normal +0  
Non-metallic x2  




Working examples:

Target pistol Step WA Conc DAM Ammo ROF Rel Cost
1. Large frame +1 J/L 25 450
2. Gas auto              
3. Cased ammo +50
4. .22LR +2 D6        
5. Light cal 3    
6. High VR +100
7. WA mod +1 +100
Final +4 J/L D6 25 3 VR 700
               
               
               
               
Very heavy handgun Step WA Conc DAM Ammo ROF Rel Cost
1. Large frame +1 J/L 6 450
2. Gas auto              
3. Plastique +D6        
4. .50 magnum -3 5D6 -1      
5. Heay cal 1    
6. Normal ST  
7. None              
Final -2 J/L 6D6 5 1 ST 450
               
               
               
               
Light machine pistol Step WA Conc DAM Ammo ROF Rel Cost
1. Medium frame 0 J 15 350
2. Electric feed +0/+5 +75
3. Caseless +20% +0/+5    
4. 8mm +1 2D6 +1/+0    
5. Medium cal 2/20    
6. Normal ST  
7. Full auto +100
Final +1 J 2D6 21 3/30 ST 525
               
               
               
               
Polymer one shot Step WA Conc DAM Ammo ROF Rel Cost
1. Small frame -1 J 8 250
2. Gas auto              
3. Cased              
4. .380 +1 2D6-1 +1    
5. Medium cal 2    
6. Unreliable UR -50
7. Dangerous
WA mod
-1		 x.5
-50
Final -1 J 2D6-1 8 3 UR 75







Written by
CHOPPER (cm5323@ccub.wlv.ac.uk)
with thanks to
Spacecraft
Harley Bobbins
Frog

Conversion by
Paul Currie (paul@stud.cs.uit.no)

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