difference in optics

[rockhound]

so I popped my ar 15 cherry this week. and bought my first bushmaster,

xm 15 e2s, used very little and in great shape, but basically stock. the former owner never did fire it. the original owner fired it very little. i have heard they have a hard trigger, but this one at least seems to be smooth. the original owner was a marine and a gun smith so he may have done some work to it.

obviously some upgrades will be in order, new stock optics etc.

the buddy i bought it from is holding it for until i can get my safe delivered. I will post photos as soon as i get it from his safe.

my question arises in the optics choices. i have only used a standard rifle scope. what can i expect to see in the way of a field of view etc that would be different in a tactical optic?

[Blowby]

I have one of those in the collection and tac'd it out to be functional. Only a one FTE when I first got it (Round 40) because of a bad mag. Since then it's run like a clock and I'm on round count 4707. I had one Magpul (#6) fail to stay locked in during a class at round count 4400 so I pulled it out of rotation and need to send it back. As far as optics I chose an Aimpoint CompM2 for reliability and battery life and the glass is real good.

OPTICAL DATA System Parallax Free, Reflex, Collimator System Magnification No magnification (1X) Eye relief Unlimited, No centering required Reticle, size Red dot, diameter 4 MOA* Optical coating Anti Reflex coating all surfaces. Multi-layer coating for reflection of red light. Band Pass coating for NVD compatibility ELECTRONIC DATA Battery Type One 3 Volt Lithium battery type 2L76 or DL1/3N Battery Life, typical** 1.000-10.000 hours average. Typically 10 years at NVD position Switch, dot brightness 10 positions, 4 NVD, 6 daylight, of which 1 Extra Bright MECHANICAL DATA Material housing Extruded high strength aluminum Surface finish Hard anodized, matte, Graphite Gray Material lens covers Thermoplastic Elastomer, black non-glare Adjustment 1 click = 10 mm at 80 meters = 13 mm at 100 meters = 1/2" at 100 yds Mounting 1 ring, 30 mm or Aimpoint QR DIMENSIONS Length 130 mm (5.1") Width/height 55 mm (2.2") Ring width Max 30 mm (1.2") Weight 200 grams (7.1 oz) ENVIRONMENTAL DATA Temperature Range -45øC to +70øC (-50øF to +160øF) Water resistance Submersible to 25 m (80ft) water depth *MOA (Minute Of Angle) 1 MOA = 30 mm at 100 meters = 1" at 100 yards

http://www.powerstrokenation.com/photopost/data/721/medium/P1070042.JPG