Crimson NPAS - VFC Spec m16a2 Fully adjustable - one size

Fully adjustable - one size fits all and compatible with helmets

Which means regardless of your hop-up setting

very high speed

VFC M933 GBBR

For VFC M4 series AEG or GBB use

Crimson NPAS - VFC Spec m16a2 Fully adjustable - one sizeNew from Crimson: Our 1j focused NPAS for a huge amount of VFC replicas is finally here! We've found from testing in a variety of VFCs that shot to shot consistency greatly improves when the CRIMSON NPAS is set to around 1j (More details below!). The full list of compatible VFC APFG Maruyama replicas the CRIMSON works with is below: VFC URGI GBBR (all variants) VFC 416 GBBR (all variants) VFC BCM GBBR (all variants) VFC SR 16 GBBR (all variants) VFC