Features
Advanced Trigger System far superior over the stock trigger system in both performance and durability
Provides smooth cocking, comfort loading, light pull trigger action and highly enhanced stability. Provides the necessary durability for high power operation and upgrades
Integrated modified trigger sear, piston sear and trigger bearing to allow a full range of power upgrades. The Alpha trigger system retains the original safety function.
The Alpha trigger system provides an adjustable trigger sensitivity for advanced shooting requirements and habits. (clock-wise for lighter pull and counter-clockwise for heavier pull. Avoid over-screwing.)
Designed to provide minimal friction for a fast response and light trigger pull under high power upgrade. (The stock trigger box will experience strong tension and friction after high power upgrades.)
The original 45 degree piston design creates unnecessary friction with the Cylinder. The Alpha trigger's second piston sear will catch the integrated 90 degree piston properly to maximize durability and stability.
100% Full CNC Milled Military Grade Aluminum Housing. 100% Full CNC High Carbon Steel (H.C.S.) Internal Sear Set. 100% Full CNC High Carbon Steel (H.C.S.) Trigger. MAX Piston and Cylinder Head Set included. Special piston head and SUS304 Cylinder Head design allow MAX air seal, directed air flow and quite operation. Integrated teflon spacers to further reduced frictions
Each "Alpha" Pro Zero Trigger system is individually fine-tuned by Angel Custom certified technicians.
 
About Angel Custom "Alpha" & "Omega" Professional Zero Trigger System:
The Maruzen's APS / Type96 and Tokyo Marui's VSR10 system are among the two most popular bolt action sniper platforms. The Marui VSR10 system offers great trigger response while lack the ability to manage high power upgrades. The Maruzen system offers the ability to take high power upgrades but lack everything else. The Angel Custom Alpha and Omega trigger system combined the best of both worlds to bring you the ultimate trigger set for your ultimate sniper rifle build.
 
Angel Custom Alpha Pro Trigger System: Advanced light pull zero+1 trigger system for enhanced stability and durability. Designed for all levels of shooters. Featuring stability and durability. Redesigned from the PDI V2 zero trigger system, the Angel Custom Alpha Trigger System is the industry's latest and most durable trigger system featuring shooting stability, adjustable trigger tension and a light trigger pull. The modified sear set provides the highest level of durability while retaining the stock safety function.
 
Angel Custom Omega Pro Trigger System: True Zero trigger for fastest response possible. Designed for advanced users. The Omega Pro Zero trigger system is a true zero trigger re-designed (120% improvement) after the Laylax zero trigger system. Compare to the Alpha system, the Omega system is much more complex in design, with less safety features (a drop of rifle may trigger the rifle, so it is critical that you transport it unloaded). The Omega system is recommended for advanced shooters only.

The Angel VSR-10 Cylinder Head and Piston Head: The inherent design flaw of the Tokyo Marui VSR-10 is its original 45 degree piston head. When a M150 or higher power spring is installed, the piston sear will start to stress the piston and moving the piston forward. As a result, the piston will experience a large amount of friction with the cylinder when you pull and push the bolt. The complete Alpha Pro Trigger System allows provides a Piston featuring a 90 degree aluminum piston with steel end cap and a new concave front end design as well as a stainless cylinder head with concaved rear end design.
 
The 90 Degree Cylinder Set is also a great upgrade for existing PDI and PSS10 Zero Trigger Sets performing a higher gas output than the originals.
 
Manufacturer: Angel Custom
 
Specifications:
Materials: CNC Aluminum Enhanced Housing, S136H Swedish Steel Sear Set and Internal Parts, High Carbon Steel Trigger
Processing: 100% CNC / Anodized.
Package Includes: Complete Alpha Pro Trigger System, VSR-10 MAX Pistol (90 Degree Aluminum Piston with Stainless Steel End Cap and Stainless Cylinder Head
Compatibility: VSR-10 G-Spec VSR10 VSR11 Series Bolt Action Sniper Rifles, KS, and compatible models.

Note: Some modification may be required, professional installation recommended.