Springer Precision Magazine Extension

Springer Precision PX4 Magazine Extension and Spring

The all-new Springer Precision extensions attach to full-size PX4 magazines to provide a 21-round capacity and 140mm length, or to compact-sized magazines to increase mag capacity to 19 rounds.

Includes:
1 x Extension and spring

Specifications:
• 21 rounds with the Full-Size 9mm 17rd mag with the extra power spring (Extends to the USPSA maximum 140mm)
• 19 rounds with the Compact 9mm 15rd mag with the extra power spring
• 21 rounds with the Full-Size 9mm 20rd mag with the extra power spring
• 17 rounds with the Full-Size .40cal 14rd mag with the extra power spring (Extends to the USPSA maximum 140mm)

Compatibility:
• PX4 Full-Size 9mm 17rd magazines
• PX4 Compact 9mm 15rd magazines
• PX4 Full-Size 9mm 20rd magazines
• PX4 SubCompact requires modification to work
• PX4 Full-Size .40cal 14rd magazines
• PX4 Compact .40cal 12rd magazine
• PX4 Full-Size .40cal 17rd magazine
• Does not work with restricted capacity magazines

Installation Instruction Video

Note: When installing the new spring and base plate in your magazine, do NOT use the factory mag catch plate.

1. Disassemble magazine.
2. Remove old spring from follower.
3. Replace spring with NEW spring on factory follower.
4. Compress Spring all the way into the magazine body.
5. Slide the Springer Precision base plate into place and let spring release into magazine extension.
6. Use small Allen key to turn Allen screw counterclockwise to lock extension in place (DO NOT OVERTIGHTEN)

WARNING: DO NOT OVERTIGHTEN

Lead Time:
If you can add it to cart, it is in stock and ready to ship!

REGULATED STATES WARNING:

Gun laws are mandated by state-level governments; therefore, they vary state-to-state. State gun laws include regulations on purchasing firearms, concealed carry permits, and ammunition. Check your local laws before ordering this product. Check your local laws for any other regulations.

We cannot sell magazines with a capacity greater than your state allows. If you purchase magazines with a capacity greater than is allowed by your state and/or local regulations, your order will be canceled. 

The states with magazine restrictions are: Washington, Vermont, Rhode Island, Oregon, New York, New Jersey, Massachusetts, Maryland, Hawaii, Delaware, Connecticut, Colorado, and California.

We recommend that this product as well as all other firearms parts & kits sold by Langdon Tactical be installed by a competent pistolsmith. No liability is expressed or implied for ANY damage or injury which may result from improper installation or use of this product. Installation of any firearm parts may limit or void the manufacturers warranty. We strongly recommend that the safety and operation of your modified handgun be thoroughly checked by an accredited gunsmith prior to use.