Glock Trigger Housing Pin — Polymer, Black | Fits G42 / G43 / G43X / G48 | OEM Part #33218

Factory-Correct Replacement for Slimline Glocks

Restore your pistol to factory specifications with the Glock Trigger Housing Pin for the slimline series—G42, G43, G43X, and G48. This OEM polymer (black) cross pin secures the trigger housing within the frame, helping maintain proper geometry for reliable trigger function and long-term durability. Whether you’re refreshing a high-round pistol, replacing a lost pin during a detail strip, or stocking parts for the bench, part #33218 is the drop-in match designed for Glock’s ultra-slim platforms.

Built to Glock’s exact tolerances, this pin offers a snug, repeatable fit that resists walkout under recoil. Using genuine parts helps preserve reliability, warranty compatibility, and resale value—and keeps your maintenance simple.

Compatibility: Glock G42, G43, G43X, G48 (9mm slimline and .380 G42). Not for double-stack Gen3/Gen4/Gen5 frames or other models.

Key Features at a Glance

• Genuine Glock OEM: Factory part for spec-correct fit and finish

• Slimline Platform Fit: Designed for G42 / G43 / G43X / G48 frames

• Secure Retention: Helps keep the trigger housing locked in place for consistent operation

• Durable Polymer: Lightweight, corrosion-proof, and gentle on mating frame surfaces

• Drop-In Replacement: Installs during a standard field/detail strip—no fitting required

• Color / Material: Black polymer

• Part Number: 33218

Why Choose OEM for Your Trigger Housing Pin?

Reliability You Can Measure

Aftermarket pins may vary in diameter or material. Glock OEM dimensions help ensure proper retention, smooth takedown, and repeatable assembly.

Protect Frame & Components

The correct pin minimizes wear on the trigger housing lugs and frame channels, supporting long service life—especially on EDC pistols that see frequent maintenance.

Keep Your Pistol “Factory Correct”

Armorer inspections, warranty work, and resale are all simpler when your firearm is built with authentic parts.

Ideal Use Cases

• Preventive Maintenance: Replace during spring changes or major cleanings

• Lost/Misplaced Part: Easy, affordable fix when a pin rolls off the bench

• Armorer Spares: Keep on hand for agency, range, or personal parts kits

• High-Round Count Pistols: Refresh small parts to maintain factory feel

Quick Installation (Overview)

1. Unload & Verify Clear: Remove magazine, lock the slide open, and inspect chamber.

2. Field Strip / Detail Strip Frame: Follow the Glock armorer or owner’s manual.

3. Remove Old Pin: Use a non-marring punch to push the existing trigger housing pin free.

4. Seat New Pin #33218: Align the trigger housing and press the new pin through until flush on both sides.

5. Reassemble & Function Check: Verify trigger reset, safety operation, and normal takedown.

Use a bench block and non-marring tools to avoid cosmetic damage. If you’re unsure, consult a certified Glock armorer.

Compatibility Notes

• Fits: G42 (.380), G43, G43X, G48 (9mm)

• Does Not Fit: G17/G19 family or other double-stack frames; not for Gen3/Gen4/Gen5 standard-width models

• Pairs Well With: OEM locking block pin, trigger pin, and standard frame parts kits for slimline pistols

Care & Best Practices

• Inspect pins for mushrooming or damage during routine cleaning.

• Keep frame channels clean; avoid over-lubrication that can attract grit.

• When installing or removing, push straight through to prevent frame lip deformation.

Frequently Asked Questions

Q: Is this the same as the trigger pin?
A: No. The trigger housing pin secures the trigger housing in the rear of the frame. The trigger pin secures the trigger/slide stop lever up front. They’re different parts.

Q: Will this fit my G43X MOS or G48 MOS?
A: Yes—MOS slide cuts don’t change the frame pin spec. This pin fits G43X/G48, MOS or standard.

Q: Metal vs. polymer—does it matter?
A: Glock’s OEM polymer design is lightweight, corrosion-proof, and frame-friendly. Using OEM maintains factory timing and durability.

Q: Do I need any special tools?
A: A non-marring punch and bench block are typically sufficient. Always follow Glock’s manual or have an armorer perform the work.

SEO-Rich Highlights & Buyer Keywords

• Glock trigger housing pin for G42 / G43 / G43X / G48

• OEM Glock part #33218 — black polymer replacement pin

• Slimline Glock frame compatible; drop-in installation

• Restore factory reliability, retention, and fit

• Armorer-grade replacement pin for Glock slimline pistols

Meta Title (SEO)

Glock Trigger Housing Pin — OEM Polymer, Black, Fits G42/G43/G43X/G48 | Part #33218

Meta Description (SEO)

Replace worn or lost parts with the Glock Trigger Housing Pin for G42, G43, G43X, and G48. OEM polymer, black, drop-in fit, and factory-correct reliability. Part #33218.

Structured Data (Product Schema JSON-LD)

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  "category": "Sporting Goods > Outdoor Recreation > Shooting > Gun Parts",
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Responsible Use Reminder

Always unload and verify clear before disassembly. Follow Glock’s owner/armorer manual, use non-marring tools, and perform a full function check after reassembly. If you’re unsure, consult a qualified armorer.

The End