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I need CO mags for my G17

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Just wondering what my options for CO legal mags that will hold 22/23 rounds.

 

The Dawsons seem like a good, less expensive choice.  But do they need new springs and followers?

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Just about any basepad made to fit the 140 length rule should work just fine - Dawson, TTI, Taylor Freelance, etc. Most of these ship with a new spring that you use with your existing follower. To ensure reliability, there is some filing and sanding you can do to the followers to make sure they go through the transition between mag body and extension smoothly. 

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If you want 140mm mags on a budget, consider the magpul 21 rounders. Yes, you're a round or two short compared to basepads but the savings is considerable

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1 hour ago, TrackCage said:

If you want 140mm mags on a budget, consider the magpul 21 rounders. Yes, you're a round or two short compared to basepads but the savings is considerable

I use the magpul 21 rounders and they work great! I don’t see the two less rounds as a real disadvantage. Always a spot to change mags. 

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I didn't really consider the Magpuls, but that sounds like a good option

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If you want to go that route, you can also consider the ETS 140mm mags. I have two that I run as "drop" mags when I practice reloads so that I'm not dropping my extensions more than needed. 

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I have the Dawson's on factory mags, and a 21rd. Magpul mag, and a bunch of the 17rd. Magpuls. I think Dawson might be dropping the +5/6 extensions, they aren't on the website anymore. Brownells has them, for $42. Add $25 for a factory mag. The big Magpuls are a steal. 

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I have a couple magpuls and a couple G17 mags with TTI bases.  Its s good setup

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I had plenty of factory mags, so I picked up 4 Dawson base pads.  Just installing them, I really like the look and the design.  I'm taking them to the range this afternoon to try them out.

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Anyone else.have issues with swollen mags when using extended base pads loaded to capacity?

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Mine ran fine yesterday.  I could load 22 rounds fairly easily, and I could have put a 23rd if I had really muscled it.

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with my TTI+5,6 pads I get 23+1 with a 13 coil spring in a Glock mag.  No problems at all.

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The TTIs look really nice, but I found the Dawson's for considerably less $ and I really like the way they go on and off

 

And I did pick up a couple of TTI basepads for my Shadow, just haven't installed them yet

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On 6/19/2018 at 12:20 PM, OPENB said:

I have the Dawson's on factory mags, and a 21rd. Magpul mag, and a bunch of the 17rd. Magpuls. I think Dawson might be dropping the +5/6 extensions, they aren't on the website anymore. Brownells has them, for $42. Add $25 for a factory mag. The big Magpuls are a steal. 

https://dawsonprecision.com/basepad-hicap-for-glock-extended-tool-less-design-by-dawson-precision/

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Those weren't on there when I looked last week. Must have made more. Glad they aren't discontinued, they are $10 cheaper than Brownells price. But, I doubt I go with any extensions on factory mags with Magpuls available for $19, $17 with the LEO discount. 

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Get the Zev +5 Pmag Extensions. I got some from eBay for $30.40 each. They work well and come with it's own spring. The extra weight of the extension makes them drop faster than the Pmag 21 round mags. 

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I found the Dawsons on Shooters Connection, they had black and silver in stock last week

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I heard the Zev base pads were too long to fit the gauge. Can you confirm they fit?

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11 hours ago, OPENB said:

I heard the Zev base pads were too long to fit the gauge. Can you confirm they fit?

I'll put them in the gauge this weekend. Should have done it already.

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I’ve got half a dozen Magpul and ETS mags, and one factory mag with TTI extension. They all run great. 

 

I can buy two Magpul 140s for the price of one extension. I run them most often. 

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I got some arredondo +5 extensions before magpul released their GL9 21 round mags.  I can usually get 23 rounds into the glock mags with these extensions.  This is nice, but when you can buy the magpul 21 rounders for 15 bucks at Primary Arms, it doesn't make sense to spend so much money on a bunch of extensions.  Most of the time, having a capacity of 21 or 23 won't matter because you'll probably reload once either way.  Though it might be an advantage sometimes to start with 23+1 and then reload with a 21.  

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The Glock factory 24 round 9mm mag is too long to be CO legal, by a good bit. It appears to be identical in length to the Glock factory 22 round mag for 40, so would only be legal for open. We just discussed this under a topic in USPSA shooting. For what it is worth, the 24 round 9 mag appears to be a bit of a unicorn anyway. Glockmeister has them now, but they are/were listed at $35 on sale. Midway does not even have them in stock yet and it appears they will be close to $40 when they do come in. That price will probably come down some as more are available.

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