Home > Magazine Upgrades >

16 Round Mosquito High Capacity Magazine Upgrade
Mosquito +3 Black Aluminum Hi Capacity Magazine Basepad and HiViz Follower | magazine extension | high capacity | 22lrupgrades | magazine bumper

Alternative Views:

The Mosquito High Capacity Magazine Upgrade converts your factory 10 round magazine to a 16 round magazine! With a round in the chamber and 16 in the mag, that's 17 rounds in gun! The High Capacity Magazine Upgrade replaces the factory plastic basepad and factory follower with an aluminum basepad and High Capacity Follower. The basepad is also longer than the factory plastic basepad and allows for more positive seating of the magazine in the gun. Additionally the aluminum construction is more durable than factory plastic basepads making your magazine less prone to breakage upon dropping.

Choose whether or not you want your pistol to lock open on the last shot fired. The original magazine kits were sold with the Shockbottle follower THAT DOES NOT lock the slide open on last shot fired. The NicTaylor follower DOES lock the slide open on last shot fired but not like the factory magazine.

Since the button on the factory magazine is removed when installing these high capacity parts, the function of locking the slide open on the last shot fired is lost. That button on the side of the factory magazine is used to actuate the slide lock feature on the gun. The NicTaylor follower is designed to catch the slide itself and thus lock the slide back/open. This technique is used frequently on AR15 22lr conversion kits. However, when doing this the user looses the ability to drop the mag free since the magazine is essentially being stopped from falling free when the mag release is pressed. The user will either have to pull the magazine out or pull the slide back to its most rearward position and manually engage the slide lock. This will allow for the magazine to drop free. For best results when using the NicTaylor follower, we recommend reversing the direction of the magazine spring (see picture). This will help with more positive engagement of the follower and thus locking the slide back.

* NOTE that the GSG Firefly is a copy of the Sig Sauer 22lr Mosquito pistol. The parts on the Mosquito are interchangeable with the GSG Firefly. So no matter if you are buying Sig Mosquito parts or GSG Firefly parts, they will fit both guns.
This item CAN NOT be shipped to California

MSRP: $30.95
Our Price: $24.95
Savings: $6.00

Shipping: Usually Ships in 1 to 2 Business Days


Installation Instructions RESTRICTIONS

1) Remove factory basepad and retainer plate.

2) Remove magazine spring and slide factory follower down to base of magazine so that the load assist pin can be removed from the follower.

3) Remove factory follower.

4) Insert HiCap follower into the magazine body.

5) Insert magazine spring into magazine body.

6) Compress spring into magazine body and slide on the aluminum basepad. Assure that the spring is in the pocket of the basepad.

7) Finger tighten set screw with the included hex wrench.

Sig Sauer 22 Mosquito High Capacity Magazine
NicTaylor Plus4 Follower

Average Rating: Average Rating: 4 of 5 4 of 5 Total Reviews: 5 Write a review »

  0 of 0 people found the following review helpful:
1 of 5 Not what I ordered July 21, 2020
Reviewer: TIMOTHY from PROCTOR, MN United States  
Went to order a magazine. The description and pictures said magazine. Got order and it was just parts. Not what I ordered. Now been waiting for 5 days for a response to my wrong order and haven't heard anything. Not impressed.

Was this review helpful to you?

  0 of 0 people found the following review helpful:
4 of 5 nice to have more rounds,a little sticky at first. June 29, 2020
Reviewer: Joe Connors from Litchfield, ME United States  
works ok. seems like it's getting better with use. about 80 rounds through them both.(bought 2) last mag shot all bullets with no hangups.

Was this review helpful to you?

  0 of 0 people found the following review helpful:
4 of 5 16 Round Mosquito High Capacity Magazine Upgrade June 2, 2020
Reviewer: Peter Dawson  
It worked, good product. Way OVER-PRICED. It is the same price of  total magazine. Shipping was expensive also. Should have Free shipping at that price...

Was this review helpful to you?

  0 of 0 people found the following review helpful:
5 of 5 Awesome set up for my sig sauer May 27, 2020
Reviewer: Russell Lawrence from McCall, ID United States  
Very good service and communication

Was this review helpful to you?

  0 of 0 people found the following review helpful:
5 of 5 Mosquito 16 Rds. May 7, 2020
Reviewer: David M. from Rural, AZ United States  
Product is well made. I think the same could be accomplished by shortening the factory follower, but the blue color is cool. I really like the metal floor plate. Assembly is really easy. Going to buy 2 more for my Keep Shooting brand spares.

Was this review helpful to you?