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| | |-+  RatWorx MSAR Hybrid Bolt Problems
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Author Topic: RatWorx MSAR Hybrid Bolt Problems  (Read 416 times)
Angry Earl
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« on: August 28, 2017, 03:32:17 PM »

I recently purchased (2x) RatWorx MSAR Right-Hand Hybrid Bolts, and I've been having non-stop problems with them. My rifle is an MSAR E4.

Both bolts I ordered are causing my rifle to jam, and I cannot get off more than shot before jamming. They are both either failing to extract the casing and/or double-feeding the next round. I have tried cleaning and re-lubing my rifle, changing mags, changing gas settings, changing extractor springs to heavier ones, and shooting heavier loads. Nothing has worked to fix the jamming issue.

Finally, I switched back to an original MSAR Bolt, and literally fired 300+ rounds without any problems. I think it's fair to say that the Hybrid Bolts may be the problem.

I have attached several pictures below. The picture showing the ammo I used (PMC X-tac 5.56mm 55gr and Independence 5.56 62gr) shows the bent 55gr casings as well as the non-bent 62gr ones. Again, both weights of ammo jammed and failed to eject.

I have already emailed RatWorx, and just waiting for a response.

Anybody else having the same problems?



* Jam-1.jpg (351.63 KB, 2048x1152 - viewed 29 times.)

* Jam-2.jpg (367.44 KB, 2048x1152 - viewed 25 times.)

* Jam-3.jpg (344.16 KB, 2048x1152 - viewed 29 times.)

* Jam-4.jpg (207.9 KB, 2048x1152 - viewed 23 times.)
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Angry Earl
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« Reply #1 on: August 28, 2017, 03:34:00 PM »

Also, side by side of RatWorx MSAR Hybrid Bolt (left) vs OEM MSAR Bolt (right)


* RW-MSAR-1.jpg (112.04 KB, 2048x1152 - viewed 25 times.)

* RW-MSAR-2.jpg (80.5 KB, 2048x1152 - viewed 29 times.)
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LazyEngineer
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« Reply #2 on: August 28, 2017, 03:39:28 PM »

Ouch.

Might just be the photo, but the Ratwox looks bigger in diameter.  Caliper that.
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DubageL
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« Reply #3 on: August 28, 2017, 07:17:47 PM »

Which bolt sleeve did you use with the hybrid bolt? Msar factory or Ratworx improved bolt sleeve?
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Angry Earl
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« Reply #4 on: August 28, 2017, 07:48:33 PM »

Using the RatWorx improved bolt sleeve.

Pretty much bought and using every upgrade piece RatWorx made for the MSAR...which is why I'm extra surprised/disappointed.
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DubageL
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« Reply #5 on: August 28, 2017, 10:26:51 PM »

I'll hold off installing mine for a bit.
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xdmikey
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« Reply #6 on: August 30, 2017, 05:02:55 PM »

I'm too busy treading water and mopping up to play with my MSAR but thanks for the heads up.

Waiting for your comparative measurement between the two bolts as requested by LazyEngineer.

Thanks Earl
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Angry Earl
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« Reply #7 on: August 30, 2017, 07:44:00 PM »

No calipers handy, and already packaged them to be sent back to Ratworx.

Hopefully, this is just a fluke and my problems are an isolated case.

If your guys' Ratworx Hybrid bolts work fine, I would love to purchase your OEM MSAR right-hand bolts/extractors. Smiley
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xdmikey
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« Reply #8 on: September 06, 2017, 10:56:06 PM »

No word from the Rats yet? I will make a sincere effort to measure mine tomorrow. I promise.
We are just waiting for fema at this point.
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DubageL
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« Reply #9 on: September 13, 2017, 05:22:31 PM »

Any further word on this bolt issue??
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Angry Earl
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« Reply #10 on: September 14, 2017, 03:56:09 AM »

Sent mine back and still waiting on the refund.
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DubageL
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« Reply #11 on: September 14, 2017, 05:41:16 AM »

So no word or explanation on the issue from Ratworx??
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Angry Earl
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« Reply #12 on: September 14, 2017, 09:28:29 AM »

Email from Ratworx before mutually deciding to just send them back:

Quote
HI ,   Earl,
               Before sending the bolts back,  make sure the
extractors have  all three elements supporting them, the
spring ,  the  O-ring and the buffer (which you showed very
well in the pictures ) and then   use them  for about  200-
500 rounds each.   That is break in  time  that is needed
with any firearm,  especially  auto loaders.   The  whole gun
needs to  get used to the new parts and the  Hybrid bolts
need that break in to mesh with their new home and the
16 inch or 20 inch barrel.  At least try  one of them and
break it in , then see how it does.   Keep us informed  
how the  break in progresses,  sir.  
Regards,      Chris  



Rat Worx, Inc.
112 E. Hitt St.
Mt. Morris, IL  61054
Phone: 815-734-7346
Fax: 800-732-9948
guns@ratworxusa.com
www.ratworxusa.com
« Last Edit: September 14, 2017, 09:52:12 AM by Angry Earl » Logged
DubageL
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« Reply #13 on: September 17, 2017, 04:54:06 PM »

Just an FYI, tried out my Msar Stg556 late gen3., with new Ratworx hybrid bolt and reinforced bolt sleeve. First 5-6 rounds failed to fully extract/eject. Used freedom munitions reman 5.56. Changed ammo and fired 25 rounds imi m193 ran flawless. Tried freedom munitions again had some failure to eject. Changed gas setting from normal to extreme for 30 rounds gun ran flawless. Changed gas setting back to normal gun ran no problems for over 100 rounds. Degreased entire gun and soaked with rem-oil prior to shooting and ran wet. Also noticed ejected cases don't seem to be dinging the receiver behind the ejection port any longer.
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