AR Blitz-Lok Sight Post - Spike Tip, Tritium Dot, Green Ring The Blitzkrieg Components AR Blitz-Lok Sight Post provides the excellent sight picture that Blitzkrieg Sights are known for with our game-changing AR sight post adjustment system. The Blitzkrieg Blitz-Lok System enables a super-precise zero with 8-clicks per rotation instead of the traditional 4. Additionally, it has a completely new detent design that smoothly rotates with a satisfying click and locks into perfect alignment with zero slop. The Sight Post then simply lifts, rotates and locks into place facing the shooter. Furthermore, the new sight tool design is easier to use and is compatible with 1/4" Bit Drivers making installation and adjustment super handy. The Blitzkrieg Blitz-Lok system solves all the weaknesses of the original A2 sight post design. Fits any sight that uses a standard A2 type sight post. This model provides a Spike Tip sight post with a Tritium Dot with a thin Green Ring around the dot providing excellent low-light capability with a Sharp Aiming Point. All parts are precision machined 416 Stainless Steel. Drop-In installation - Simply unscrew the factory sight post and allow factory plunger and spring to drop out, then insert the Blitzkrieg spring and plunger and screw in the Blitzkrieg Components Blitz-Lok Sight Post using the included Sight Tool. Features: Tritium Dot (1.9mm diameter) for Effective 24/7 Low-Light Capability 8-Click Per Rotation for Perfect Zero Easy Adjustment and Positive Locking into position Bold, Fast Sight Picture with Sharp Aiming Point Precision Machined 416 Stainless Steel Parts Drops into any Sight that uses a standard A2 type sight post Custom Sight Tool Compatible with 1/4" Bit Drivers Fit: This Sight Post replaces standard AR15/M16A2 "A2" type sight posts and is compatible with the vast majority of sights that accept this type of sight post. If for some reason it doesn't fit your sight, we have a no hassle return policy and are happy to answer any questions you many have on fit. Parts Included: Blitzkrieg Blitz-Lok Sight Post Detent Plunger and Spring Sight Tool Patent Pending MADE IN THE USA