FOREGRIPS

Thumbgrip (SMG, AR, DMR)

Thumbgrip can be used to increase the ADS speed (Aim Down Sights is the time taken to scope up), increase the vertical recoil control and increase the weapon steadiness. This grip reduces 5% of the vertical recoil, 20% of the weapon sway and increases 30% of the ADS speed.

Lightweight Grip (SMG, AR, DMR)

Lightweight grip is used to improve the weapon stability after shots and the steadiness of the weapon. This grip can reduce the weapon sway by 20%. It is used mainly to increase the stability of the weapon. However, this grip can reduce the gun’s recoil better than any other foregrips. This is the grip that is most liked by players as it improves the stability of each weapons. 

Halfgrip (SMG, AR, DMR)

Halfgrip is used to improve recoil control and recoil recovery. However, this grip increases the weapon sway by 20% which reduces the steadiness of the weapon. This is the only grip that can reduce both horizontal and vertical recoil by 8% and at the same time increase the recoil recovery (the time it takes for the muzzle to stabilize) by 10%. However, as this grip reduces the steadiness of the weapon, it is less liked by players especially when using M416 as this gun needs to be stable for players to fire continuously.

Angled Foregrip (SMG, AR, DMR)

An angled foregrip is used to improve the horizontal recoil control and ADS speed. Angled foregrip increases the weapon sway similarly as a halfgrip which reduces the steadiness of the weapon. It is mainly used to reduce horizontal recoil (15%) and increase the ADS speed (10%). 

Vertical Foregrip

Vertical foregrip is used to improve the vertical recoil control and weapon stability after shot. This grip does not increase weapon sway and ADS speed. It is mainly used to reduce the vertical recoil by 15% only. Before the lightweight grip was introduces, this foregrip was mostly used for M416 while the angled foregrip was used for Scarl-L.

Source from: PUBGMap

Images from: Gamepedia