CZ 455 22LR +2 mag extensions

Aug 20, 2012
255
10
18
virginia
#1
Been working on refining these and have them working well. Price is $12 for one and $10 each for two or more. This includes shipping and hardware.

These allow for 12 rounds in the standard 10 round plastic magazine and still allow insertion into a closed bolt using the factory spring. Material is ABS for extra strength.

Currently I have Red and Black available but will be able to to make them in other colors as well just need a few extra days to get the material in. Screw heads will be black also not silver as shown. These parts are made by additive manufacturing, small imperfections are to be expected.

IMG_20180527_203709.jpg

Next to Stock 10 rd magazine
IMG_20180516_181228.jpg

installation video
 

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Last edited:
Likes: SLG
Feb 16, 2017
7
0
1
California
#5
Interesting addition, good work. It appears that these extend the magazine by an inch or so. Could you take a picture side by side with a factory 10 round magazine.
 

SLG

Gunny Sergeant
Sep 2, 2009
711
196
43
#13
Got mine in the mail today. Took one minute or so to bolt them on to two mags. One of the mags only ever held 9 rds, no matter what I did. Now they both hold 12:) Took them out to the range, no issues whatsoever. I didn't submit them for lab testing, so all I can say is the 48 rds I fired through them so far all did what they should. Adds a nice rounded aspect to the bottom of the mag, which before was, if not sharp, at least not soft.

They also fit on 5 rnd plastic mags, but if you have a standard mag release, they won't really work as is.

Good stuff, and highly recommended so far!
 

ZY100

Sergeant
Oct 13, 2007
203
17
18
VA
#17
Got mine...great all the way around. Shipped quick, simple to install, works 100% and gives a good area to grip on the mag.

Concur on the 5-round mag, it interferes with the CZ mag release--not sure on an extended release, but probably. I do really like how it gives just a nub to grab when using the 5-rounder. I image I will dremel some clearance, but possible design mod for future runs.

ZY

PS...spin up a batch for the Anschutz 22LR Magazine...you will be a hero!

https://www.anschutznorthamerica.com/22-17-mags.html
 
Aug 20, 2012
255
10
18
virginia
#27
Ordered orange, tan and od green and should be here Wednesday. It's from a different supplier so I want to make samples before I say they are good to go. I'll keep you guys posted.
 
Aug 20, 2012
255
10
18
virginia
#30
Here are the orange and the tan! Will take me about another day to print up some stock of each and then theyll be ready to ship out. Bottom pic is to show the tan against my precision traner and I threw an AI barrel in pale brown in the pick for reference too. It is a little in between but close to the brown on the cz trainer than the AI pb.


IMG_20180627_210038.jpg IMG_20180627_205438.jpg
 
Nov 23, 2017
147
50
28
51
Chandler, AZ
#31
Here are the orange and the tan! Will take me about another day to print up some stock of each and then theyll be ready to ship out. Bottom pic is to show the tan against my precision traner and I threw an AI barrel in pale brown in the pick for reference too. It is a little in between but close to the brown on the cz trainer than the AI pb.


View attachment 6916719 View attachment 6916720
PM sent I will take 2 tan ones.

Looks great 👍🏻
 
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