M110/SR25 Accessory - What is it?

[Pugster]

I was watching some M110 / SR25 videos online and saw a wheel/drum accessory mounted near the rifle rear (See attached pictures).

Does anyone know what is the name of it?

I thank everyone for your help with this.

 

[TRPrecision]

Angle gauge for determining shot angle up or down hill.

Badger Ordnance Angle Cosine Indicator Kit Generation 2 Picatinny

The Angle Cosine Indicator(ACI) from Badger Ordnance takes the confusion out of determining shot angle. No need for angle and cosine charts, one simple...

www.midwayusa.com

 

[1moaoff]

Yep

 

[Pugster]

Thanks everyone! It's nice to finally know what it is