TRUBL

I think the issue is not rotating......hell, they don't rotate fast enough to wear anything out. Rather......on blow back actions, people don't realize that it is MUCH more violent than 223 gas and hammer pins tend to break in half where the J hook slot is. About the only way to get away from that is to run aftermarket pins normally called anti walk......but when you get them, make sure you get the pins with out the J hook groove....or they will break as well. Yup.....some have never broke a hammer pin......awesome!!! good for you!!.....now go lay by your dish. But others have and others will.....getting an anti walk pin with out the J hook will help you

No more busting knuckles!!!

What dot bounce? Here is a video on my TACCOM page......total weight of the barrel and Hand Guard is 22 ounces (14 ounce ULW barrel, 8 ounce hand guard). Never mind that I'm slow as hell on this video.....it's recoil and muzzle rise you want to see here. Also, take note on the earlier double taps on the big plates. If it does rise....it's comes back fast. Oh....and that is not 9mm, that is 45ACP with factory Federal 230 grain ammo.....with a 203PF. Why do I shoot 45? I'm bored with 9mm at times. Also......the recoil system is the Delayed Blow Back.

If you have to go Ti.....yes, Jason is a great guy, great friend too!! PSA firing pins are very good!! Our present firing pin has working fantastic and comes with the return spring.

TACCOM will have news on a kick butt charge handle by this next Friday......with an off chance of even having them available.

So you see a faster impulse and......the dot bounce looks like almost nothing!!

So you push back the brass and close the upper......pretty sure at that point you’ll be contacting the bolt.....and that’s a good thing.

Don’t confuse snappy with more.....the system is going to be faster. Recoil is less and thebtell tale is the amount of dot bounce which should be way less Tim

.620" is good to go.........if you get into the size of the hole on the JP bolt, then you need to remove the front keeper and run it with a detent pin. The absolute smallest hole can be no smaller than .525" diameter. Tim

There is another thread on the ZULU stock and using a spacer........I'll see if I can find out what the length is once you remove the spring assembly from the stock

yes it does

Neither would I.......your key word is "TRADITIONAL", something that this system is not.

People were asking about the system......and while it's rather lengthy to explain to each person when they call, I decided to post an explanation on our FB page, so here is what was wrote: . The current 3 stage system is currently one of the top 3 systems on the market presently for the 9mm straight blow back AR’s.. This system is conventional in that it runs (with the bolt) in the 19 to 22 ounce total mass range, which is typical of any of the current systems out there. The weight in the current systems is the main drawback to felt recoil for 9mm. The 3 stage adjustable system helps tame the felt recoil by use of a second stage that slows the mass down at the end of the recoil stroke and a third stage that separates the mass of the bolt and buffer upon returning to battery and that cushion also slows down the buffer at the end of that stroke. The current 3 stage recoil system includes a preload load to adjust the preload weight of the recoil spring and you can use the optional short stroke limiter to shorten the recoil stroke. The 3 stage recoil system with out the use of the short stroke limiter allows for the use of LRBHO. This system and all other systems will send the bolt and buffer back to the rear as soon as the round is fired and while the pressure in the 9mm case is at maximum. An interesting note about this system is that due to the 3rd stage cushion……bolt bounce is almost non existent and functions very well in full auto AR9 rifles. The Delayed Blow Back System, uses rare earth magnets to retard the movement of the bolt and buffer for a split second. This allows the projectile to move down the barrel a little farther than any conventional system, allowing for a significant drop in the chamber pressure before overcoming the magnetic force applied by the opposing magnets in the buffer and guide rod. Imagine for a moment that if you have less pressure sending your current weight system back……it would move slower. Taking that into consideration, we knew that we could lower the overall mass of the bolt/buffer to bring the speed back up (or a little more) and still reduce the measured recoil. People that shoot the MP5 with the delayed roller or the MPX with the short stroke gas system already know that with a lighter mass going at the same speed, the recoil is much less than the recoil of a conventional AR9. So get back on track…..we were able to reduce the mass by 25% over our current system and are able to increase the speed of the recoil by a little bit over a conventional system. Now, we already know that we are going to hear that the recoil is more than what they currently have……this is only a perception, do not confuse faster with more. The bottom line is that due to the less mass the recoil is in fact less and more importantly, the sight ‘bounce’ is minimized and return to POA is significantly reduced. Your cadence will need to be adjusted and typically within the timeframe of one practice session, you will see positive results in split times and bullet to bullet distance on paper. What I am saying is that target reacquisition will be faster and almost (if not) as fast as any roller system or gas system presently available today. The delayed blow back system also incorporates a second stage at the end of the recoil stroke to help slow the mass down before bottoming out on the stop. This is why, if there is any drawback…..it will not allow for conventional LRBHO to function. In the near future, we will be releasing a new 9mm bolt that when used with any short stroked recoil system (ours or conventional) allow the LRBHO to function. While designed to run with factory loaded ammo, we’ve found that this system works well with lower PF ammo, down to the 11oPF for steel loads…….we will be offering a reduced buffer weight for people that want to shoot sub 100PF in the near future. This system has been tested with suppressors, but has not been tested with full auto rifles and presently, we do not recommend using this in full auto. While this may not be a ‘pros and cons’ of one system over the other…….I’ve laid out the facts of each of the 9mm recoil systems we offer and you can decide which system is better for your use. BTW, either system will work with 9mm, 40sw and 45acp…..we presently, will not recommend any straight blow back system for the 10mm auto. Just set in our ways I guess…….but always open to try it down the road.

The reciprocating parts of the system (bolt/buffer) is about 25% less mass than our 3 stage system (bolt/buffer)

Plus one on what he said......I love the stock, but that secondary cushion they put in is pretty much worthless. the spring is too weak and it compresses completely with just installing your spring and buffer in. You are much better off removing that crap and putting a solid spacer in. They had a good idea, just a crappy execution.

Are you running it on auto mode or manual? I find that running on manual mode you get the brightest dot/circle......I do that with all my holosuns. I went from cmore to vortex to holosun and am NOT looking back at all.

I'v got both and run the 510C on my PCC and for the most part, run the 507C on pistols.........that being said, i do have a 507C on a Ruger PC carbine and on one of my PCC's . I actually prefer the 507C for steel challenge due tot he circle being 35MOA and not 65MOA

For a very long time, we did not provide any washer......but the public had spoken and while I personally am not a fan of using washers, we made a command decision to start providing peel washers with all of our 1/2-28 and 1/2-36 brakes. Tim

FROM THE TACCOM FACE BOOK PAGE Crush Washers for timing brakes and muzzle devices on your 9mm can be a VERY BAD IDEA!!! Has anyone ever snapped the end of a barrel off trying to time a brake on a 9mm barrel? It has happened. The drawing pretty much gives you an idea of what the representative wall thickness is for a 1/2-28 thread and the major bore of the 9mm barrel.......basically .050" which is not much at all!! if you are timing a brake and you need to do a 3/4 turn......chances are, you will snap your barrel off. So what to do??? Personally, In our opinion, the absolute best way is to time the brake in a lathe so that you have maybe an 1/8 turn to proper line up. There are other ways as well..... 1) peel washers....yes, they are a 'layered' washer (we provide them with our muzzle brakes)....each layer is .002" and represents about a 16th of a turn (4 layers = 1/4 turn) approximately. SO if you are a 1/2 turn from top dead center.....start with removing 5 or 6 layers and crank it up with a wrench. 2) time your brake with sand paper.......we've taken 150 grit sand paper, laid it on a flat surface and would stroke the back end across the sand paper......rotating the brake 90 degrees each stroke to keep it square 3) Sand your crush washer......while I am not a real fan of this, it can work, same thing, 150 grit sand paper/flat surface....'large end' of the crush washer.....stroking in a figure 8 pattern to keep the surface square. Bottom line unlike the 5.56 where you have over a .100" wall thickness, the 9mm bore and 1/2" threads are very fragile and you should never tighten a brake to your barrel over 1/3 of a turn to be safe. Hope this helps!!!!

hahahahaha

From running years of Ruger Rimfire, steel challenge, USPSA and 3 gun........I've found this may not be a super simple question to answer. A few things we've developed for the sports however shows winning promise. Ruger Rimfire/Steel Challenge: HE who has the lightest front end, swings the fastest......we opted for barrels that weigh under 1 pound and carbon fiber hand guards in the less than 6 ounce area. When we were heavy into the ruger rimfire.....our 13 ounce carbon fiber tension barrel reigned supreme. Now.....our 16" UWL barrel that is hands down the lightest and original (14 ounces) for 9mm has been the standard for the steel game. my present set up for steel challenge is right at 5# for 9mm PCC....and it balances right about at the trigger guard. USPSA PCC.......I personally still like the UWL barrel and CF HG.....brings the Center of mass in closer to me and swing is still fast, I've gone to LUTH-AR stocks....a little heavier and seem to mitigate recoil nicer as I can pull the line of bore in close to my chest. My main gun is just under 6#, and another is just over 8#......I like both run both fine, but the lighter one seems to do better with classifiers. Both firearms balance at just behind the magwell. Another good choice is a 14.5" barrel with a pinned and welded brake......still a light barrel at 1.3 pounds and brings the center of the rifle right to the magwell. I also have a 40SW PCC with an 8" barrel/shrouded to 16" that shows promise.....it comes in at 6.1 pounds and balances at the back end of the magwell. 3gun......well, this gets more into 223 and I have been playing with guns that run in that 7# range that balance right at the mag well.....great for hosing and still more than stable for the long distance shots......keep in mind as a rule, you are shooting supported at long distance for the most part and this is why I went with a lighter configuration.

To be honest......the factory trigger is mainly a BX25 factory trigger and is not that bad for PCC

PSA is in the process of doing a +15 extension for their magazine to get it up to 50 rounds.......HOPEFULLY, they will be stackable so you can get 65 Of course I already have tons of Scorpion mags and have a few with the TACCOM coupler to get 50+ rounds, so I personally am set (for now). Anyways.......I did take the AKV to the Hornady Zombie match and it worked flawlessly!! Got home and finished up tot he build today: Zhukov-U forearm, K2 grip, Luth-AR stock, TACCOM mid brake barrel extension, ALG trigger, Bushnell Lil Pris and a left hand charge handle......as well as a new yet to be released recoil cushion has made this AKV a formidable choice of weapon for USPSA PCC competition!!!....And yes, it has been drop dead reliable with the Scorpion magazines too. I'll be switching the optics over to a Holosun as well as cutting off the front sight (it's obnoxious). Comes in at just under 8#......would be less if I swapped out the stock for something somewhat lighter. Recoil is light and comes back stupid flat.....Overall, impressed with the performance.

I just went with the volquartsen trigger parts for the 10/22 and used the factory springs.......more than enough for the pc carbine and right around the $100 mark. I would not put anything Mcarbo in that gun.

I put the ALG trigger in and a MAGPUL K2 grip as well. Waiting on the MAGPUL Zhukov-V fore arm. I did take it to the Hornady Zombie match last weekend and it ran 100% was very quick and accurate too. I'll be using it most of the season this year I think. PSA is going to come out with +15 round extensions for their magazine to get a total of 50 rounds so it will be a viable platform. I am going to install a left hand charge handle (personal only) this week. Probably do a magwell (personal only) and extended mag release as well.