Magpul MAG803-BLK — Tactile Lock-Plate Type 1 — Polymer — Black — 1/8" Single Ridge — Fits PMAG 10/20/30 AR/M4 GEN M3 & .300 BLK GEN M3 Floor Plates — 5-Pack (MAG803BLK) — UPC 840815117711
Upgrade reload speed, positive tactile feedback, and magazine handling with the Magpul MAG803-BLK Tactile Lock-Plate (Type 1) — a precision-molded polymer accessory engineered to retrofit PMAG GEN M3 and .300 BLK GEN M3 floor plates. Sold in convenient 5-packs, these black tactile lock-plates add a subtle 1/8" single ridge that gives shooters an unmistakable index point for faster magazine insertion, confident handling, and improved control in low-light or stress conditions.
Overview — What the MAG803 Is and Why It Matters
The MAG803-BLK is a low-profile, durable upgrade for your PMAGs that enhances magazine manipulation without changing capacity or requiring permanent modification. The raised single-ridge tactile surface gives a consistent, ergonomic contact point for the support-hand or trigger-hand pinky — improving reload speed and repeatability for competitive shooters, trainers, and defensive carriers alike. Because it’s a polymer drop-in part, installation is fast and reversible.
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Key Features
Model: MAG803-BLK (Tactile Lock-Plate Type 1)
UPC: 840815117711
Material: High-strength impact-resistant polymer
Finish / Color: Black (matte)
Tactile Profile: 1/8" (approx.) single ridge for positive finger purchase
Compatibility: PMAG 10/20/30 AR/M4 GEN M3 and PMAG .300 BLK GEN M3 floor plates (fits GEN M3 floor plate geometry)
Pack Size: 5 pieces per pack — convenient for outfitting multiple magazines
Installation: Simple, tool-free snap-in installation; fully reversible
Benefits — Performance, Ergonomics & Reliability
Faster Reloads: The raised ridge provides a reliable index point for the pinky or support-hand, speeding up magazine seating during timed drills or stressful encounters.
Improved Control: Enhanced purchase on the magazine body reduces slippage and helps stabilize the gun during reloads.
Low-Profile Design: Adds functionality without significantly changing magazine footprint — most pouches and carriers remain compatible.
Durable Polymer: Engineered to withstand field use, drops, and abrasion without cracking or deforming.
Reversible & Non-Destructive: Installs over original GEN M3 floor plates without glue, pins, or permanent alteration — remove or replace as your setup evolves.
Compatibility & Fitment Notes
Designed specifically for PMAG GEN M3 AR/M4 10/20/30 and .300 BLK GEN M3 floor plate geometries. Confirm your magazine is a GEN M3 platform before purchasing.
Because the MAG803 mounts to the floor plate area, certain closed mag pouches or ultra-tight Kydex carriers may feel slightly different after installation — test with your existing gear to ensure desired draw and retention characteristics.
Not intended for non-PMAG magazine designs or older generation PMAGs (GEN1/GEN2) without GEN M3 floor plates.
Installation — Fast & Tool-Free
Ensure the magazine is unloaded and safe to handle.
Remove the magazine from any pouch and seat the existing GEN M3 floor plate as needed.
Align the MAG803 tactile plate with the floor plate interface and press until it snaps and seats securely.
Confirm a firm engagement and function-check for retention and holstering compatibility.
No special tools or adhesives are required; the part is designed for repeatable install/removal.
Use Cases
Competitive Shooters: Gain split-second advantage in reload transitions.
Tactical / Duty Applications: Quieter, more confident magazine handling under stress or while wearing gloves.
Training & Range Use: Standardize mag feel across a squad or training class with identical tactile points.
Everyday Carry / Preparedness: Add confidence and control to your defensive gear with a nearly invisible upgrade.
Maintenance & Care
Wipe clean with a damp cloth; mild soap if needed.
Inspect periodically for wear or loosening after heavy use; replace if ridge profile becomes severely worn.
Avoid prolonged exposure to aggressive solvents that may degrade polymer over long periods.
Technical Summary (At-a-Glance)
Product: Magpul MAG803-BLK Tactile Lock-Plate Type 1
Material: Polymer (impact resistant)
Color: Black
Tactile Height: ~1/8" single ridge
Fits: PMAG 10/20/30 AR/M4 GEN M3 & .300 BLK GEN M3 floor plates
Pack Quantity: 5 per pack
UPC: 840815117711
Frequently Asked Questions
Q: Will this change my magazine capacity?
A: No — the MAG803 is an external tactile add-on that does not alter internal capacity or follower geometry.
Q: Does it require permanent modification?
A: No — installation is snap-in and fully reversible.
Q: Can I install this while the magazine is loaded?
A: For safety, always handle magazines unloaded during installation to avoid accidental discharge during handling.
Q: Will it fit in my existing mag pouches?
A: In most cases yes — MAG803 is low-profile, but extremely tight-fit pouches should be checked to confirm smooth insertion/removal after install.
Why Choose Magpul MAG803-BLK?
Magpul is a trusted industry leader for ergonomically focused, battle-tested firearm accessories. The MAG803-BLK brings a small, inexpensive, and highly effective ergonomic improvement that helps shooters perform better under stress, in competition, and during everyday handling — all while maintaining the proven reliability of PMAG GEN M3 magazines.
Outfit your mags with a consistent tactile index point across your kit — the Magpul MAG803-BLK 5-pack is an easy, repeatable upgrade that pays dividends in speed and confidence when it matters most.
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