NcStar D4B Red Dot Sight With MULTI RETICLES Angel Products Clamping feed-neck with Ion (Smart

Clamping feed-neck with Ion (Smart Parts)/ICD threads

It features a retractable "flip-up" support brace and a ridged buttplate ensures a secure shoulder grip

In testing it was found that changing to a different spring (lighter spring) caused issues with the bolt hitting the breech with too much force

The Fang Trigger is the most durable

Ultra low-profile Clamping Feedneck

NcStar D4B Red Dot Sight With MULTI RETICLES Angel Products Clamping feed-neck with Ion (SmartFeatures LED (Light Emitting Diode) 100% safe for the eyes Anodized Aluminum body Heads up display Unlimited eye relief and field of view Seven Position rheostat knob for multiple brightness settings Powered by three volt lithium battery (CR2032) Includes extra battery, lens cover, mounting tool Specifications MAGNIFICATION: 1X OBJECTIVE DIA(MM): 24X34 RETICLE: MULTI RETICLE(4) DOT SIZE: 3 MOA CLICK VAL: 1 MOA EXTERIOR FINISH: BLACK ALUMINUM LENS