OICW (TL 7/8)
The Alliant Objective Individual Combat Weapon
for GURPS
Version 1.21
Introduction
The OICW is the U.S. infantry combat weapon of tomorrow. It is scheduled
to go into service in 2006. The weapon part of the system is made by Heckler
and Koch (HK).
The OICW is a combination weapon system of a 5.56mm rifle and a 20mm grenade
launcher. It has a single trigger for both barrels, ambidextrous switches
and is built as lightweight as possible. The rifle part may be detached
from the grenade launcher and used as a stand-alone weapon. It functions
very similar to other modern assault rifles because it is a variant of
the new HK G36.
The OICW Sight
The most innovative part of the OICW system is the sight ($6,720; 1 lb.).
It is a telescopic video sight employing uncooled IR sensor technology
for full thermal imaging night vision capability. Also it features a laser
sight and laser range finder, a targeting computer (called fire
control system, FCS) and a weapon interface. All these features are only
useable for aimed fire.
Using a laser range finder, the FCS pinpoints the precise target range
at which the grenade launcher round will burst and relays this information
to the 20mm ammunition fuzing system. The launcher sets the fuse on the
grenade for an airburst detonation at the exact range - e.g. right over
trenches or just inside buildings. The FCS also detects moving targets
within the field of view, outlines them and provides aiming points.
The sight can connect via the weapon interface to a helmet-mounted display,
allowing the soldier to engage while keeping head & body behind cover,
using his rifle like a periscope in dangerous situations and even to use
aimed fire over trenches or around corners without risking exposure. (Note
that this is not the same as a HUD Sight in GURPS.)
The effects for GURPS are:
-
Telescopic Sight (´6
power) gives +2 to Acc.
-
Targeting computer gives +2 to Acc.
-
Weapon interface gives aimed and braced fire
bonuses (up to +4) and full Acc firing from full cover.
-
IR sighting system gives +2 to spot any living
things or warm machines, even at daylight (e.g. in a contest of Vision
vs. Camouflage) and only a -1 penalty when fighting at night.
-
Laser sight gives +2 to Acc, SS penalty is
only -1 up to 50 yards and -2 at ranges between 50 and 100 yards.
-
Laser rangefinder gives +2 to Acc and allows
for timed airbursts with the 20mm grenades.
All these modifiers are cumulative and are
not included in the statistics below. They should be used if applicable.
 |
The Ammunition
Standard 5.56mm kinetic energy ammunition is used for the
rifle in the first years. Later caseless and combustible-cased ammunition
may be introduced.
There are three different types of 20mm grenade launcher
ammunition: Bursting munition (HE, black round), High Explosive (HEC, yellow/red
round), and Target Practice (blue round). Cost is $25 per bullet. This
may drop to about $10 over the years. The high cost comes from the complex
high-tech fuzing system (TL8).
The effective burst radius is about 2 yards, intended
to make a near miss good, and no more. Effective fragmentation radius is
5 yards in GURPS. Use the scatter rules (p. B119; advanced version
p. VE176) for near misses. Note that contact damage is doubled for concussion
and fragmentation damage, and that fragmentation damage is cutting damage
(Damage Mod. ´1.5 behind DR).
Fragments from the bursting munition will defeat PASGT armor (PD2, DR5). |
OICW 5.56mm Rifle
Use the Guns [Rifle] (for single shots)
or Guns [Light Automatic] (for bursts) skills with assault
rifles.
| Weapon |
Malf |
Type |
Damage |
SS |
Acc |
1/2D |
Max |
Wt. |
RoF |
Shots |
ST |
Rcl |
Cost |
LC |
Holdout |
separated
(only pistol grip) |
Ver. |
Cr. |
4d |
10 |
6 |
300 |
2,200 |
3.44 |
12* |
30 |
11 |
-2 |
440 |
1 |
-1 |
combined with GL
(standard OICW) |
Ver. |
Cr. |
4d |
14 |
9 |
300 |
2,200 |
13.5 |
12* |
30 |
10 |
-1 |
8,000 |
0 |
-5 |
separated and with
shoulder stock |
Ver. |
Cr. |
4d |
12 |
9 |
300 |
2,200 |
3.92 |
12* |
30 |
8 |
-1 |
+90 |
1 |
-2 |
Notes: The weapon may fire single shots, 2-round bursts (firing
2 rounds for each pull on the trigger) or full automatic. It can be separated
from the grenade launcher and used standalone with an optional shoulder
stock. An optional twin drum high capacity magazine holds 100 rounds, costs
$80, weighs 5 lbs. (loaded) and worsens Holdout by one level.
GURPS Vehicles 2nd Ed. gun design characteristics: 5.56mm
caliber rifle, 10' barrel (medium length), light automatic with pistol
grip and detachable shoulder stock. WPS 0.027; VPS 0.00018; CPS $0.054.
OICW 20mm Grenade Launcher
Use the Guns [Grenade Launcher] skill with all grenade launchers.
| Weapon |
Malf |
Type |
Damage |
SS |
Acc |
1/2D |
Max |
Wt. |
RoF |
Shots |
ST |
Rcl |
Cost |
LC |
Holdout |
| OICW GL |
Crit. |
Spcl. |
Spcl. |
11 |
8 |
280 |
2,300 |
13.5 |
1 |
6 |
10 |
-2 |
840 |
0 |
-5 |
Notes: Accuracy is useable up to 1,200 yards (not limited
by 1/2D). Weapon cannot be fired alone, so the weight of the 5.56mm rifle
was included in calculations for SS, Acc, Wt., Rcl., ST and Holdout. Holdout
for detached grenade launcher module alone is -2.
20mm OICW Ammunition
HE: 1d+2 [2d] explosive. WPS 0.2; VPS 0.002; (theoretical)
CPS $1.2
HEC: 2d explosive. WPS 0.2; VPS 0.002; (theoretical)
CPS $1.2
GURPS Vehicles 2nd Ed. gun design characteristics: 20mm
grenade launcher, 18' barrel (short length), low powered slow autoloader
with shoulder stock, recoil reduction (p. UTT62) and bullpup design. LWt.
alone is 9.03.
GURPS Design Notes
The GURPS statistics are very close to the
data that has been published so far about the OICW and they conform
to the GURPS rules for weapon design in GURPS
Vehicles, 2nd
Ed. The optional GURPS rule "Variable Weight" has been used. Two
components of the design are TL8, the infrared sight and the grenade launcher
ammunition. First we are very close to TL8 and second the rules
for these TL8 items and the data about the real thing match perfectly.
For a broad range of TL8 20mm grenade ammunition see GURPS
Ultra-Tech 2, page 67, under Mini-Grenades.
Copyright © 1999 by Christoph
Sticherling. GURPS
is copyright © of Steve
Jackson Games.
Thanks to Christoph Sticherling for allowing me to post his page on my page.
