Installing an Aftermarket AR-15 Trigger

Erik Winter of Windham Weaponry walks through the process of installing an aftermarket AR-15 trigger. He has selected the Geissele 2 Stage (G2S) Trigger to be installed on a Windham Weaponry VEX-SS AR-15 rifle.

Windham Weaponry

Windham Weaponry VEX-SS “Varmint Exterminator”:

  • Model: R20FSSFTSKV
  • Caliber: .223 Rem.
  • Type: Rifle
  • Action: Semi-Automatic, Gas Impingement System
  • Capacity: 5 + 1- Ships with one 5 Round Magazine (accepts all std. sizes)
  • Safety: Manual Lever with Indicator Markings on Both Sides of Receiver
  • Receiver: M4A4 Type Flat Top Upper Receiver with Optics Riser Blocks
  • Receiver Material: Forged 7075 T6 Aircraft Aluminum with Aluminum Trigger Guard
  • Receiver Finish: Hardcoat Black Anodize Finish
  • Bolt Material: Carpenter 158 Steel
  • Barrel: 20” Stainless Steel – Fluted – Matte Finish
  • Barrel Material: Precision 416R Stainless Steel
  • Chamber : Compass Lake Spec. with Matched Bolt
  • Rifling : 1 Turn in 8” – Right Hand Twist
  • Stock: Skeleton Stock with Sling Swivel
  • Forend / Pistol Grip: Knurled, Vented Aluminum Free-Float / Hogue Rubber Grip
  • Rear Sight: None – Ready for Optics of Choice on Picatinny Rail Platform
  • Front Sight: None – Picatinny Rail Platform
  • Packaging: Hard Plastic Gun Case with Black Web Sling & Operators Manual
  • More Info: Windham Weaponry

Geissele 2 Stage (G2S) Trigger:

  • Weapon Platform: AR15/AR10
  • Type: 2 Stage
  • 1st Stage Weight: 2.5lbs.
  • 2nd Stage Weight: 2.0lbs.
  • Total Pull Weight: 4.5lbs.
  • Adjustable: No
  • Pin Size: Mil-Spec
  • Trigger Bow Type: M4 Curved
  • More Info: Available at Brownells