Description
OEM parts and accessories are made with the same attention to detail and quality as the ultra-reliable pistols. From firing pins to trigger springs, nothing keeps your running like OEM parts.
Glock OEM Magazine Catch Spring — SP39543 (Fits All Models Except G21SF)
The factory-original Glock magazine catch spring — the part that keeps your magazine seated and your pistol running.
If your Glock’s magazine isn’t seating with a positive click, releases too easily under recoil, or you’re replacing worn components during a frame rebuild, this is the part you need. The Glock OEM Magazine Catch Spring (SP39543) is a genuine factory replacement manufactured to the exact same specifications, tolerances, and materials as the spring your pistol shipped with. Nothing aftermarket. Nothing approximated. Factory Glock quality at $9.99 with free shipping.
This part also serves as the updated replacement for the legacy Glock part SP00280 — the same spring, same fitment, new part number. If you’re searching for SP00280, this is your part.
Why OEM Matters for Springs
Springs are the most failure-prone components in any semi-automatic pistol — and the magazine catch spring is no exception. Over thousands of cycles of magazine insertions and releases, the spring fatigues, weakens, or deforms. When it does, magazines may:
- Fail to seat fully on insertion
- Drop free unexpectedly under recoil
- Require excessive force to release during a reload
- Not lock positively in the well, causing feeding malfunctions
An OEM replacement spring restores the precise tension Glock engineered into your pistol from day one. No guessing on spring rates. No fitment issues. Drop it in and trust it.
Key Facts
- Genuine Glock OEM part — manufactured to factory specifications and tolerances
- Part number SP39543 — updated replacement for legacy part SP00280
- Universal fitment — fits virtually all Glock pistols across Gen 1 through Gen 5
- Calibers covered — 9mm, .40 S&W, .357 Sig, 10mm, .45 ACP, .380 ACP, .22 LR platforms
- Simple installation — no gunsmithing required; field-strip accessible with standard Glock armorer tools
- Factory tested — produced to the same quality standards as new Glock pistols
Compatibility — Fits All Glock Models (Gen 1–5) Except G21SF
| Compatible Models |
|---|
| G17, G17L, G17 Gen 5 |
| G19, G19X, G19 Gen 5 |
| G20, G20SF |
| G21 (standard frame only — NOT G21SF) |
| G22, G23, G24, G25 |
| G26, G27, G28 |
| G29, G29SF, G30, G30SF, G30S |
| G31, G32, G33, G34, G35 |
| G36, G37, G38, G39 |
| G40, G41, G42, G43, G43X |
| G44, G45, G48 |
⚠️ Does NOT fit: G21SF (Short Frame). The G21SF uses a different frame geometry that requires a unique magazine catch spring. All other G21 variants (standard frame) are compatible.
📌 Legacy part note: SP39543 replaces the older part number SP00280. If your parts reference or armorer kit lists SP00280, order SP39543 — it is the current factory equivalent.
Who Needs This Part?
- Glock owners replacing a worn or damaged magazine catch spring during routine maintenance
- Gunsmiths and armorers stocking OEM replacement components for Glock service
- Frame builders completing a Gen 1–5 lower parts kit
- Competitive and duty shooters who keep OEM spares on hand for match-day or field reliability
- P80 and Polymer80 builders — SP39543 is compatible with most PF-series and Glock-pattern frames using standard Glock frame parts
What’s in the Box
- 1× Glock OEM Magazine Catch Spring (SP39543)
Installation
The magazine catch spring installs during standard Glock frame disassembly. Remove the magazine catch assembly, seat the spring in its channel, and reassemble. For step-by-step visual guidance, visit the AimArms Installation / How-To Guide.
Bundle It — Frequently Bought Together
Complete your Glock frame service or parts kit:
- Glock OEM Extended Magazine Catch 9/40/357 Gen 1-3 SP01981 — $9.99
- Extended Slide Lock Release Lever for Glock Gen 1-4 — $14.99
- Glock OEM 5 Pound Connector Gen 1-3 SP00343 — $12.99
- Browse All Frame Parts
Glock OEM Magazine Catch Spring Fits All Models Except G21SF SP39543
Warning: This product can expose you to chemicals, including lead, which is known to the State of California to cause cancer, birth defects, or other reproductive harm. For more information, go to www.P65Warnings.ca.gov.
“GLOCK” is a federally registered trademark of GLOCK, Inc. and is one of many trademarks owned by Ges.m.b.H., Inc. Neither Aim Arms nor this site are affiliated in any manner with, or otherwise endorsed by, GLOCK, Inc. pistols, parts, or components. For genuine products and parts, visit www.glock.com.
