AS Designs MCX / MPX Slip Trip Kit

AS Designs MCX / MPX Slip Trip Kit

Unlock advanced trigger system compatibility for your platform with the MCX / MPX Slip Trip Kit, engineered to enable reliable operation with Super Safety and ARC-Fire systems on supported MCX and MPX variants. Designed for durability, smooth cycling, and precise timing, this kit provides the essential components needed to properly integrate enhanced reset selector systems with compatible fire control groups.

This kit includes a precision-machined slip trip and slip trip guide, manufactured from premium materials to withstand the stresses of repeated cycling. The heat-treated 4140 steel slip trip ensures long-term strength and wear resistance, while the 7075-T6 aluminum slip trip guide features a Type III hardcoat anodized finish with PTFE (Teflon) to reduce friction and promote smooth operation.

For added convenience, the lever blocker is built directly into the slip trip guide, eliminating the need for a separate component when using Super Safety or ARC-Fire systems.

Engineered for compatibility with MCX and MPX platforms chambered in 5.56, 300BLK, 7.62x39, and 9mm, the kit supports most platform generations and integrates with standard AR-pattern fire control groups and compatible modified triggers.

If you're upgrading your platform to support advanced selector reset systems, the MCX / MPX Slip Trip Kit provides the critical interface components needed for dependable performance and smooth operation.

Super Safety & ARC-Fire Compatible
Designed to enable proper operation of Super Safety and ARC-Fire systems on compatible MCX and MPX platforms.

Integrated Lever Blocker
Built directly into the slip trip guide, eliminating the need to purchase a separate lever blocker component.

High-Strength Steel Slip Trip
Precision-machined from heat-treated 4140 steel for exceptional durability and wear resistance.

Aircraft-Grade Aluminum Guide
Slip trip guide constructed from 7075-T6 aluminum for strength while keeping overall weight low.

Hardcoat Anodized with PTFE
Type III hardcoat anodizing with Teflon reduces friction and promotes smooth cycling.

Multi-Caliber Platform Support
Compatible with several MCX and MPX chamberings including 5.56, 300BLK, 7.62x39, and 9mm variants.

Works with Modified Geissele Triggers
Compatible with Geissele triggers modified for Super Safety or ARC-Fire use.

Supports Standard AR Fire Control Groups
Designed for use with standard AR-pattern fire control groups (original hammer may require modification).

Designed for Aftermarket Integration
Built to integrate with performance upgrades while maintaining durability and reliability.

Specifications

• Product Name: MCX / MPX Slip Trip Kit
• Included Components: Slip Trip, Slip Trip Guide
• Slip Trip Material: 4140 Steel (Heat Treated)
• Slip Trip Finish: Black Oxide
• Slip Trip Guide Material: 7075-T6 Aluminum
• Slip Trip Guide Finish: Type III Hardcoat Anodized with PTFE (Teflon)
• Lever Blocker: Integrated into slip trip guide
• Trigger Compatibility: Standard AR Fire Control Groups and Geissele triggers modified for Super Safety / ARC-Fire use
• Compatibility Systems: Super Safety and ARC-Fire

Platform Compatibility

• MCX 5.56
• MCX 300BLK
• MCX 7.62x39
• MPX
• MPX-K
• Generation Support: Compatible with most generations (safety latch may need removal on early models)

Important Compatibility Notes

• Not Compatible With: MCX .308
• Not Compatible With: MCX .277 FURY
• Not Compatible With: MPX Copperhead
• Not Compatible With: Atrius Super Selektor
• Not Compatible With: Factory Timney Trigger
• Not Compatible With: Traditional FRT triggers (RB, DTT, Dairyland)
• Trigger Restrictions: Do not use cassette-style triggers

Installation Notes

• Installation Recommendation: Professional installation by a qualified gunsmith is recommended
• Fitment Note: Some fitting or minor modification may be required, as with many aftermarket accessories

Shipping Restrictions

• Restricted Shipping States: CA, CO, CT, DE, FL, HI, IL, MA, MD, MN, NJ, NV, NY, OR, RI