How to Install and Set Up Your Mec-Gar CZ Shadow 2 Aluminium Basepad

A botched reload on the clock costs you seconds you can't get back. If you're running a CZ Shadow 2 with a Boss Components magwell and Mec-Gar magazines, upgrading to purpose-built aluminium basepads is one of the easiest ways to speed up your magazine changes and eliminate fumbled insertions at the next IPSC match.

This guide walks you through the complete installation process — from removing your factory basepads to fitting and testing the Mec-Gar CZ Shadow 2 Aluminium Basepad, including magwell fitment checks and competition setup tips. The whole job takes roughly five minutes per magazine, no specialist tools required.

What You'll Need

Before you start, gather these items so the job goes smoothly:

• Mec-Gar CZ Shadow 2 magazines — these basepads are designed exclusively for Mec-Gar magazines. They will not fit factory CZ magazines or aftermarket magazines from other manufacturers.
• Boss Components Aluminium Basepad(s) — one per magazine you want to upgrade.
• A small flat-head screwdriver or basepad removal tool — to depress the magazine retaining plate.
• A clean, lint-free cloth — for wiping down internals.
• A flat, clear workspace — magazine springs are under tension and small parts can roll. A towel on a bench works well.

Important safety note: Before handling any magazines, ensure your firearm is unloaded and stored safely. Work with empty magazines only — never attempt to disassemble a loaded magazine.

Removing the Factory Basepad

The factory Mec-Gar basepad is held in place by a retaining plate that sits inside the magazine body. Here's how to remove it safely:

1. Empty the magazine completely. Press the follower down and visually confirm no rounds remain. Double-check by looking through the feed lips.
2. Locate the retaining hole. On the bottom of your Mec-Gar magazine, you'll see a small hole in the centre of the basepad. This is where the retaining plate locks into position.
3. Depress the retaining plate. Insert your flat-head screwdriver or basepad tool through the hole and push the retaining plate inward (toward the spring). You'll feel a slight click as it disengages from the basepad channel.
4. Slide the basepad off. While holding the retaining plate depressed, slide the factory basepad forward (toward the front of the magazine). It should move freely once the plate is disengaged.
5. Control the spring. Once the basepad is clear, the magazine spring and follower are free. Keep your thumb over the bottom of the magazine body to prevent the spring from launching across the room. Slowly release tension and remove the spring and follower.

Set the factory basepad aside — you may want to keep it as a spare. Wipe down the spring, follower, and magazine body interior with your cloth to remove any debris or old lubricant.

Installing the Aluminium Basepad

With the magazine stripped, fitting the new aluminium basepad is straightforward:

1. Inspect the aluminium basepad. Check the CNC-machined surface for any packaging debris. The hard anodised finish should be smooth and even. Note the direction — the basepad has a front and rear orientation that matches the magazine body profile.
2. Reassemble the magazine internals. Drop the follower back into the magazine body (rounded end up, legs facing down), then insert the magazine spring on top of the follower. The spring should sit naturally in the follower's channel.
3. Compress the spring. Push the spring down into the magazine body until the retaining plate sits flush with the bottom of the magazine tube. You'll need to hold some tension here.
4. Slide the aluminium basepad on. With the retaining plate depressed and flush, slide the new aluminium basepad onto the magazine from the front, pushing it rearward until it clicks into the locked position. You should feel and hear a positive "snap" as the retaining plate engages.
5. Verify the lock. Give the basepad a firm tug downward. It should not move or slide. If it slides off, the retaining plate hasn't fully engaged — remove the basepad and try again, ensuring the plate is properly seated before sliding the basepad into its final position.

Checking Magwell Compatibility

These basepads are engineered specifically to work with Boss Components CZ Shadow 2 magwells. After installation, you need to verify proper fitment:

1. Insert the magazine into your magwell by hand. The magazine should slide in smoothly with the aluminium basepad guiding into the magwell funnel. There should be no catching, binding, or excessive resistance.
2. Check the seating. The magazine should lock into the magazine catch with a positive click. The basepad should sit flush or just slightly proud of the magwell's bottom edge.
3. Test the release. Press the magazine release and let the magazine drop free under gravity. It should fall cleanly without hanging up on the magwell.
4. Repeat at speed. Practice several magazine insertions at competition pace. The larger surface area of the aluminium basepad should give you a more positive grip during fast reloads compared to factory basepads.

Note: These basepads are designed for Boss Components magwells. If you're running a different magwell brand or no magwell at all, verify compatibility before committing to a full set of magazines. The dimensional tolerances are optimised for the Boss magwell funnel profile.

Setup Tips for Competition

Once your basepads are fitted and your magwell compatibility is confirmed, here are some practical tips for getting the most out of them at IPSC and USPSA matches:

Mark Your Magazines

If you're running a mix of basepads (aluminium for speed, brass for weight), number or colour-code your magazines so you can quickly identify which is which during a stage walkthrough. Some shooters run aluminium basepads on their primary magazines and brass on a backup for added weight low in the grip.

Test Across All Positions

Practice reloads from every magazine pouch position on your belt — front, rear, and any angled pouches. The aluminium basepad's profile should clear all standard IPSC-legal magazine pouches, but belt setup varies and it's worth confirming before match day.

Dry-Fire Reload Drills

Run at least 50 dry-fire reloads before your first match with the new basepads. Focus on:

• Consistent grip on the basepad during the draw from the pouch
• Magazine orientation as you bring it to the magwell
• Seating force — aluminium basepads with a magwell should require less force than bare magazines, but your muscle memory needs updating

Weight Considerations

The aluminium construction keeps weight minimal — ideal for Production division shooters who want faster reloads without adding mass to their loaded magazines. If you're in a division where added weight helps manage recoil (Standard or Open), consider the brass basepad alternative instead.

Troubleshooting Common Issues

Most installations go smoothly, but here are solutions for the few issues that occasionally come up:

Basepad Won't Slide On

The retaining plate isn't fully depressed. Remove the basepad, push the plate further inward, and try again. If the plate is bent or damaged, it may need replacing — contact Mec-Gar or your retailer for a spare retaining plate.

Basepad Slides Off During Use

The retaining plate isn't engaging properly. Strip the magazine and inspect the plate. It should have a small raised tab that clicks into the basepad's locking channel. If the tab is worn flat, replace the retaining plate. Also check you're installing the basepad in the correct orientation — front to back matters.

Magazine Hangs in Magwell

If the magazine doesn't drop free cleanly, check for debris in the magwell funnel. Also verify you're using a Boss Components magwell — other brands have different internal dimensions and may not provide proper clearance for these basepads.

Tight Fit on First Insert

A slightly snug fit on the first few insertions is normal with a new hard anodised finish. After 20–30 insertions, the contact surfaces wear in and the action becomes noticeably smoother. If it remains excessively tight, contact Boss Components support.

Complete Your CZ Shadow 2 Reload Setup

The aluminium basepad is one piece of a complete reload optimisation system. Here are the complementary upgrades that work together:

Other upgrades to consider for your CZ Shadow 2 competition build:

• CZ 75/Shadow 2 Progressive Recoil Spring — smoother cycling for faster follow-up shots ($9.95)
• CZ Shadow 2 Mec-Gar +2 Base Pad — extra capacity for stages with higher round counts ($39.99)
• CZ Shadow 2 Mec-Gar Magazine Base Pad — standard replacement basepad option ($35.99)