You could also order 2 of the end caps and have one 18x1 threaded, I wish I would have gone this route instead of having my barrel threaded (just because I knew my suppressor would live on this gun anyway).

SilencerCo has a 18x1 thread protector.

That's what I figured. Thank you. I'm off to go order parts now

It was in the drop down list for both the aluminum kit and stainless kit.

Since I'm tired of waiting on a retractable charging handle, I thought I will give it a go.  This is what drawn up so far:










I'm going to have Shapeways print it out in plastic first to make sure everything works.  If it passes the test, I'll order the HBI charging handle and modify this one to mount to the HBI Rod.





What do you all think?

 

That's nice.

I was also looking at charging handles this morning for something I could adapt to use.  The ACR handles looked like the closest thing that could be modified to work.  I've just not looked at the CZ charging handle up close yet.  But it looks like the handle is held in with two roll pins?

I am thinking of picking up some MP5 mag pouches from 511 while they are on sale for my scorpion mags. Does anyone know if the scorpion mags fit the 511 MP5 pouches?

On your second pic I think that you should reverse that serrated edge near the rod, and have it reversed of it's current position in that pic as it will eat up fingers as you snag it. looks good I also agreeIm kinda disappointed with lack of folding charging handles. I guess good things to those who wait but I hate waiting lol. Keep us posted. maybe start another thread so its easier to follow as the chatter in this one can make it hard to follow start to finish if in this thread.

I won't open up a new thread, since it will take a while for the test parts to come in.  I used the no rush option in Shapeways to save a little on cost.  $11 so for in the project.  I plan to use the stock trigger spring, since I replaced mine with the HBI version. It might be too tough, but will see how it works.



I'll keep you all updated.  



 

Cool, I applaud you sir for trying something as us few wanting retractables are waiting for a solid option to develop itself someday. I'm excited get R done!

Too tight.

I took my CZ Scorpion out shooting this weekend for the first time. It is an all factory pistol with a Shockwave "Blade" brace added.

A few of my experiences;

While the factory end cap was hard to remove, the Shockwave adapter had a bit of wiggle when installed on the gun. It concerned me enough that I used a little RTV sealant spread VERY thin to make the interface more solid. I used a release agent on all surfaces so I should be able to still easily remove it in the future if I need to.

I used the Blade brace in compliance with the spirit of the ATF approval and did not "shoulder" it at all.. Instead, I tried several different methods to "stabilize" the pistol. The most effective was using it to obtain a cheek weld in association with a rifleman stance (well off the shoulder). Using this method, I was able to quickly and confidently make one big ragged hole at 50 yards. Using this method, the "Blade" itself helped keep me from canting the gun as I tended to do with using just the tube.

I was not impressed with the CZ factory sights. They look cool but I found 3 of the 4 the rear apertures were obscured by the protective wings surrounding the front sight making it hard to make shots with repeatable POI. Only the smallest opening permitted me to center the front post consistently. I may move the rear sight further forward closer to the front sight. This gun is screaming for an electronic virtual sight of some sort so I may just go that route along with a QD mount in case I need to use the factory sights as a buck-up.

The gun itself functioned 100% with 200 rounds of a variety of loads with no gun induced *failures of any kind. From anemic 115gr. PMC to Winchester124gr.NATO and some Fiochhi and WWB. It all functioned fine. It really seemed to like the 124gr.NATO load the best in terms of accuracy and authoritative function. Next range trip I will try some HP.

This is a very light gun for what it is. As a result, I was surprised by the amount of muzzle flip. Nothing harsh or uncontrollable but definitely noticeable.

Empty magazines did not drop free and required a bit of finesse to remove smoothly.

*I caused a couple jams during mags changes by trying to use the charging handle to chamber the first round. Half the time, my fumbling fingers interfered with a smooth release causing a failure to feed. This all stopped when I started using the bolt release lever for "combat" magazine swaps. I found I could only use the charging handle effectively if it was in the full reward and locked position to begin with.

Nice review.  What is are the parts required to install a shockwave brace?

Everything you need including the Scorpion adapter (which simply replaces the CZ factory end cap) comes in the complete Scorpion brace kit from Shockwave Technologies. It is super easy to install requiring only an Allen wrench and an AR tube castle-nut tool. From past a experience, a little Blue-Loctite helps a lot too.

Good review!

I shot mine for the first time this past weekend as well.  I didn't put many rounds through it, I just wanted to function test it.

I immediately noticed the right-side safety was annoying.  It dug into my hand really bad, so much that it was uncomfortable to shoot.  I will replace this ASAP.

The rails are a little aggressive.  I need to find some rail covers.  I'm pretty sure I have a set or two lying around that I can use.  This will make the handguard more comfortable to hold.

The cocking lever is small but it isn't terrible.  I didn't have much trouble with it.  I might replace it eventually, especially if some of the folding ones in this thread are available.

I had no problems with the trigger or grip.  I will probably replace them anyways.  The grip wasn't as bad as I thought it was going to be.

It was awkward to shoot as a pistol.  It will be really nice once I can SBR it.  I also feel that it could use a red dot of some sort.  The iron sights aren't terrible but they aren't great.  I am content with how they perform but prefer to have a red dot.


Overall, I am happy with my purchase and will be tickled pink when I get my suppressor and can SBR it.  Can't wait!

I forgot about the safety lever. I am a Lefty and I really need to grind down the lever on the left side. It was rubbing my finger raw after just 200 rounds. I can't believe some Engineer at CZ designed that and said; "that's good, I like that".

I am happy with mine as well. I see it filling a niche in my shooting options. I am debating whether I should SBR it or not. I already have a couple SBRs and keeping this gun in "handgun" status has some real benefits.

Here is my b-tube with the Gemtech 3 lug mount. Works great.

ETA - the Gemtech direct thread will save you $$$ though if you do not plan to remove it. either way no thread protector is needed

http://www.gem-tech.com/store/pc/GM9-CZ-SCORPION-16p1199.htm

It's about time you showed back up in this thread, your build is what inspired me to pull my gun apart and duracoat it.

Gentleman please correct me if I'm wrong. 922r compliancy can be reached by using the cz kit, but it looks like you can get complancy without the kit by replacing the stock, the grip, the mag floor plate and follower, and the trigger. For the last item you can either get a muzzle brake or simply remove the stock brake.

Does that sound correct?

Yes- provided that you are referring to a US-made stock.  The one that comes with the 922r kit counts as an imported part requiring that the disconnector also be replaced.

Bro that was like 200 pages ago, old news

Thank you. I was looking at  few aftermarket option s

It's a flash hider, not a brake.

That's why I would wet my drawers for someone to offer a 3-lug machined barrel for this thing.

No pesky adapters.

That surprises me. Mine LAUNCHES empty mags. As in ejects them under spring pressure.

Just got my 2nd Evo from PSA and just wanted to give props. Good price, perfect transaction and was here in Idaho in 2 days.

Try it with the bolt open. Like when it hold open after the last round. My has just started to to drop free.

This. Mine was too inconsistent so I just got a paddle mag release. Train the reload like an MP5 with a bolt release.

Look at the back of the mag, there is a tab sticking up that is on the follower.  That tab is under pressure when the bolt is closed and is what causes the magazine to launch out.  Bolt back and the tab isn't under pressure, I wonder why they designed it like that.

The tab on the follower is what actuates the bolt hold open.

How long before there is a dedicated scorpion subforum? This thread is getting ridiculously long!

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Agreed!

Sent my barrel off to usmachineguns to be rethreaded last monday and have not heard from them. Emailed and called ( got voicemail and then a mailbox has not been setup yet message) but nothing. So far this is not like ADCO service. I'm start regret sending it off to usmachineguns. The non responsive CS thing drives me crazy

I like this idea.

X2

MP5s still have the HK forum. [shrug]

Yes I'd like to see our own subforum. I doubt it yet, but I think if the market gets larger like it seems to be with the 2016 models coming like the carbines and fde model. Maybe someday

I've been wondering this too.
Lots of SBRs but no carbines in here yet

I recently ordered some 30 round magazines online, however when I went to the range and tried one out, it would only fit 28 rounds. I checked twice and you can visibly count the rounds in the magazine. Has anyone else experienced this?

I see Kentucky Gun has them back in stock but has raised the price. Wondering if Palmetto and others will follow suit as we get closer to the new release and inventory runs low.

Raised $21?

How about just a CZ forum, CZ has a lot of cool guns. I've picked up a 805 Bren and it's becoming one of my favorite pistols (SBR paperwork pending ).

I'll allow it.gif
Love me some CZ pistols, bolt actions too

I found the last round was a real bear to load until I cycled it a couple times.

Try this;
As you load the last two rounds place your thumb over the round to be loaded and use your other thumb pressing down on the "loading thumb"  to give you additional force.

or

Load as many rounds as you can and leave the magazine to sit loaded for a few days and then try to add the last two rounds. Sometimes the springs just need to take a little bit of a set to properly function in their full range of compression.

Well - if you really want one....   The Original CZ Forum

(ducking and running in a serpentine pattern)

There is already a CZ forum.  http://www.ar15.com/forums/f_5/37_CZ.html

I just signed up there, I wanted to be on the list for the 805 adapter and the only other way was to sign up on Facebook .

I'm on both cz forums as well there are 2 but only 1 that's active.

Yes, I think he's locking the bolt back via charging handle in the notch. Everyones mags drop free this way.

HB Ind right side safety delete ordered