Gaming The Optics

The Aimpoint M4 aka M68 Close Combat Optic is a Collimating Sight (HT p. 156).  It gives a +1 to Guns/TL skill out to 300 yards and cancels up to -3 in darkness penalties.  $1,100; 0.8 lb.

The Trijicon TA31RCO is a 4 power Telescopic Sight (HT p. 155) with an Illuminated Reticule (HT p. 155).  It gives, up to, +2 to Accuracy and cancels up to -3 in darkness penalties.  $1,300; 0.9 lb.

The Elcan M145 is a fixed 3.4 power Telescopic Sight (HT p. 155) with an Illuminated Reticule (HT p. 155).  It gives +1 to Accuracy and cancels up to -3 in darkness penalties.  $1,450; 1.5 lb.

The Vortex Optics M157 is a TL8 Computer Sight (HT p. 157) giving a +1 to Guns/TL skill and a +3 to hit with an aimed attack out to 4,000 yards using the laser rangefinder, but without the Night Vision or Infravision in the description; however it has both a visible and IR Integral Targeting Laser (Shoulder Arm) (HT p. 156-157). It is also a 1 to 8 power Telescopic Sight (High Tech, p. 155) that gives up to +3 to Accuracy with an Illuminated Reticle, which cancels up to -3 in darkness penalties (High Tech, p. 155).  $5,400; 1.9 lb.

"Whoopty doo, Basil, what does it all mean?"  A Powers IMMoM

The M4 is simplest.  If you're inside 300 yards, you get a +1 to your skill.  In the real world, we'd call it "aiming" but GURPS doesn't think of using the sights as "aiming."

Telescopic sights require a turn of the aiming action per point of bonus.  So to get your +2 bonus with the ACOG, you have to spend 2 actions aiming.  The variable power of the M157 means you take a second to dial it to the bonus you want then spend the requisite number of actions aiming, zero to three.

If you spend an action using the laser rangefinder, it gives a +3 to the built-in +1 for a total of +4...  Spending an additional three second aiming gets a total of +7 with it dialed to 8x!