Fits all 20mm accessory rails

Full size fixed

Fully Adjustable w/ Slide Adjuster

and will not fit in the HK416 platform

Perfect for your custom build

HPA 6mm 3300 Count Biodegradable Tracer BB's 0.30g (Green) vertical Fits all 20mm accessory railsOur 0. 30G Our proprietary ingredients enhance the biodegradation of HighPowerAirsoft Enhanced Biodegradable BB in a biologically active landfill (appropriate facilities not available in all areas). An independent test that represent biologically active landfill effects on our products have shown up to 25. 6% adjusted biodegradation in 358days. *Results may vary based on environmental conditions* 0. 30g FLUO Specifications: Enhanced Biodegradable BB