CZ Shadow 2 Magazine Extension by Henning
Get more rounds on the belt without giving up reliability. The Henning +5/6 basepad is a CNC-machined extension for Mec-Gar CZ-75 pattern magazines that takes a factory 17-round Shadow 2 or SP-01 mag up to 21–22 rounds on the stock follower and spring, 23+1 with a Grams Engineering kit, or 24+1 with an MBX Ultra Max kit. Gauged to the USPSA 141.25mm limit, it's ready for Carry Optics and Limited, with numbering dots on the base, a side cutout for a positive grab, and a reinforced wall that stops over-insertion.
Important: Not Compatible with Magwells
This version of the Henning +5/6 basepad is not designed for use with a magwell. If your CZ Shadow 2 is equipped with a magwell, you will need the magwell-compatible version of this basepad.
Using a magwell? Click here for the CZ Shadow 2 +5/6 Magwell-Compatible Magazine Extension.
Perfect for USPSA Carry Optics/Limited Division
Magazine Spring & Follower Options
This Henning CZ Shadow 2 / SP-01 +5/6 Basepad is available with several spring and follower options depending on your intended setup. An extra power magazine spring is recommended when using this extended basepad.
Want to retain slide lock? Select the Henning Extra Power Magazine Spring and reuse your factory follower. This is the recommended setup for customers who want to retain last-round slide lock.
Important: The Grams, MBX, and CSRG competition spring and follower kits are designed to maximize usable magazine capacity and do not retain last-round slide lock.
- No Spring: Basepad only. This option does not include a replacement magazine spring. An extra power spring is recommended when using this extension.
- Henning Extra Power Spring: Uses your factory magazine follower (factory follower not included). This is the recommended option if you want to retain last-round slide lock. View Henning spring details & compatibility.
- Grams Engineering Spring & Follower Kit: Competition spring and follower setup designed to maximize usable magazine capacity. View Grams kit details & compatibility.
- MBX Ultra Max Spring & Follower: Competition spring and follower setup designed to maximize usable magazine capacity. View MBX Ultra Max details & compatibility.
- CSRG Gen 2 Competition Spring & Follower Kit: Competition spring and follower setup designed to maximize usable magazine capacity. View CSRG Gen 2 details & compatibility.
Before selecting an option: Review the linked product page for specific magazine compatibility, capacity information, installation, and other product-specific details.
The factory/Mec-Gar CZ-75B 9mm 17rd magazines and 15rd Compact magazines with our kit fit a variety of guns:
- CZ Shadow 1&2, CZ-75 SP01
- Dan Wesson DWX Compact
- Tanfoglio Small Frame
- Magnum Research' Baby Eagle
- Jericho 941
- SAR K12 Sport, with Mec-Gar CZ-75 magazines ONLY.
To hit peak capacity, the extension needs the right internals — a follower and spring kit is what turns extra length into extra rounds. Ben Stoeger Pro Shop stocks this basepad alongside CZ magazines and CZ Shadow 2 and SP-01 pistols to build a match-ready setup. Fast shipping from our Texas warehouse, and as the competition CZ specialist, our team can help you dial in the exact follower, spring, and round count for your division.
This kit fits the USPSA 141.25mm magazine gauge.
Our latest design includes numbering dots, a side cutout for light side grab and a reinforced wall thickness. This design is also made to not over-insert.
NOT a complete magazine
MBX "Ultra Max" Spring & Follower
*Note This Product will not lock slide back on last round fired
ATTENTION!
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Our Magazine Parts Policies

9 Reviews
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Works with CZ-Parts.com mag funnel
These are great basepads. the machining is flawless and easy to install. I finally received my CZ-parts mag funnel and was able to confirm that these basepads work without issue. I did get the Grams followers and have had no feed issues.
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23rd goodness!
23rds with grams followers and toolless design, easy to clean in between stages.
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Functional and looks good!
23rds Mec-Gar tubes and Grams followers!
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23rnds with mecgar 17rnd mags
My first ext basepads so not much to compare to. seems quality machining. I got the option with mag springs as well. The stock mags from the SP-01 will fit one more round, but they wont fee as good, so mecgar mags GTG.
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No regrets on purchasing.....
Although a bit pricey they are well worth the cost. Very easy to install. Quick shipping also. Very smooth transaction. Thanks BSPS!!!
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High quality
It was a bit more expensive with the springs but worth it. It was very nicely made. I have some others with cheap set screws. These have a spring catch.
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Fantastic basepads
These are great for adding +4 9mm. Look good, quality is spot on. They also work perfect with the CZ factory nickle mags. Would buy again.
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more rounds and looks slick!
Ordered 4 of these for my nickle CZ75 mags. Fit, finish, and quality is outstanding. Would recommend. Ben Stoeger Shop customer service is outstanding and helped answer some questions that needed answers.
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Works great
This extension and the spring follower kit works great. Got 23 rounds in my S2 mags. They function perfectly. The slide will still lock back when empty. And the extension is east to remove with no tools.