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GLOCK Not G42/G43
California Proposition 65 Warning

This product can expose you to chemicals including lead, known to cause cancer and birth defects. For more info visit P65Warnings.ca.gov.

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"GLOCK" is a registered trademark of GLOCK, Inc. Neither RSR Group nor this site are affiliated with or endorsed by GLOCK, Inc. For genuine GLOCK products, visit glock.com.

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GLOCK

Not G42/G43

$5.00
Available California compliant

GLOCK OEM Magazine Extension Insert, 9MM, 40S&W & 357 SIG, Black, Not G43, Must Purchase OEM Plus Two Magazine Extension (GLSP07151) Separately, Packaged 50976

Key Details
Brand GLOCK
Manufacturer Part Number 50976
UPC 764503060779
SKU GLSP50976
Current Stock 7566 available
Quantity Updated Aug 7, 2026 2:26 PM
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Purchase Requirements
  • Final availability is confirmed at checkout.
In-Store Pickup Required: All firearm purchases must be picked up at our Beverly Hills location after background check completion.
Product Description

This Glock Factory Magazine Extension Insert is a factory original from Glock. Factory replacement parts are manufactured to the exact same specifications and tolerances and use the same manufacturing materials as the original parts which guarantees excellent fit and reliable operation.

Features
  • Fits Double Stack 9MM/40S&W/357 Sig Magazines
  • Polymer
Specifications
UPC: 764503060779
Manufacturer: GLOCK
Manufacturer Part #: 50976
Model: Not G42/G43
Type: Magazine Part