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Broken SIG 550/551 Charging Handle Grip.. Login/Join 
Member
Picture of MG34_Dan
posted
So I pulled my SIG 551 out of its safety case, cocked the hammer, inserted the bolt carrier assembly, snapped in the charging handle, and released the bolt hold open button. What should I get but plastic chunks flying all over the floor. Looking over my 551 I saw that the charging handle plastic grip was broken. Now what do I do? I searched the interweb and found this interesting page over at www.gunfactory.ch:
https://www.gunfactory.ch/langwaf/accstgw90mag.htm

They sell replacement grip handles! So, broken grip handles must be a known issue. I contacted Rolf and ordered a couple. They arrived yesterday. I began my repair.

Decided to glue the replacement grip handle in place with JB Weld MarineWeld


I removed the broken grip from the charging handle using a small vice. When clamped down, the handle shattered and fell off the charging handle stem. Interestingly, I needed to remove the remnants of the dried old glue that held the original grip in place. That's the coffee colored stuff shown below.


I mixed up a little JB Weld and got the new grip handle ready to glue.


I gooped up the charging handle stem with the glue and slid the new grip in place. I then used my vice to firmly hold the handle in place. I let everything sit for 24 hours.


This was my outcome. All looks OK, in my opinion.


“Elections have consequences, and at the end of the day, I won.”
– Barack Hussein Obama, January 23, 2009
 
Posts: 2027 | Location: Austin Texas USA | Registered: February 03, 2007Reply With QuoteReport This Post
SIGSauer
Anthropologist
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Congratulations. You are the owner of the most expeinsive item SIG has ever sold. I think it´s value is around 8000$ per pound. A pound of an engraved Swiss P210L is only worth a fraction. Wink
 
Posts: 3650 | Location: Switzerland | Registered: January 24, 2001Reply With QuoteReport This Post
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Picture of MG34_Dan
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quote:
Originally posted by OTD:
Congratulations. You are the owner of the most expensive item SIG has ever sold. I think it´s value is around 8000$ per pound. A pound of an engraved Swiss P210L is only worth a fraction. Wink


Daniel; Who designed this? I cannot believe the Swiss Army would put up with it.

This message has been edited. Last edited by: MG34_Dan,


“Elections have consequences, and at the end of the day, I won.”
– Barack Hussein Obama, January 23, 2009
 
Posts: 2027 | Location: Austin Texas USA | Registered: February 03, 2007Reply With QuoteReport This Post
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Picture of kimberkid
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quote:
Originally posted by MG34_Dan:
quote:
Originally posted by OTD:
Congratulations. You are the owner of the most expensive item SIG has ever sold. I think it´s value is around 8000$ per pound. A pound of an engraved Swiss P210L is only worth a fraction. Wink


Daniel; Who designed this? I cannot believe the Swiss Army would put with it.

Agreed ... however, the handle is still useable, the plastic is just for comfort!


If you really want something you'll find a way ...
... if you don't you'll find an excuse.

I'm really not a "kid" anymore ... but I haven't grown up yet either Wink
 
Posts: 5311 | Registered: January 11, 2007Reply With QuoteReport This Post
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This happened to me also. That old brittle plastic shot everywhere. I didn't know what had happened at first.

I've priced a replacement but I'm not willing to pay that much for the same thing to happen again. I would think SAN would be using a different type of material for the new charging handles but I don't know that for sure.

I'm going with the buck naked look for the time being, but will probably get a replacement from the gunfactory also.

I'm surprised that some of the nicest rifles are plagued by shitty plastic parts, the Valmet RK71 and RK76 plastic stocks and butt plates are some crack prone items also. Just have to take the good with the bad...
 
Posts: 63 | Registered: December 09, 2005Reply With QuoteReport This Post
Lead slingin'
Parrot Head
Picture of Modern Day Savage
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Regrettable that this happened, but your repair appears to have turned out well.

I recall reading SIG 55X promotional material from the era and one of the features tauted was the nature of the plastic used in the rifles and that it was considered so high tech and proprietary that it was kept secret, although I don't recall if that applied to all the various plastic components or just some of them.

Undesirable to be sure...but I'd take a broken charging handle plastic cover over, say broken 55X plastic mags, of which I've had three crack.
 
Posts: 5477 | Registered: August 21, 2006Reply With QuoteReport This Post
SIGSauer
Anthropologist
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The furniture is made of nylon 6 type material. Polymere type pistol frames are made of a similar material


quote:
Originally posted by MG34_Dan:
[QUOTE]Originally posted by OTD:
Congratulations. ....

Daniel; Who designed this? I cannot believe the Swiss Army would put up with it.


Dan, the knob is made of hard rubber, not plastic. It dissoves when its in contact with mineral oil type gun lubes. Silicone is recommnded to protect rubber parts. I learned it the hard way also.
I was probably cheaper to use a 5 cent part then additional machining on 600000 chargeing handles. Designer of the rifle was Mr. Bordbeck and his team.
 
Posts: 3650 | Location: Switzerland | Registered: January 24, 2001Reply With QuoteReport This Post
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I was under the impression that the rubber cocking handle cover is a press fit, does not require epoxy.


---------------------------------------------
"AND YEA THOUGH THE HINDUS SPEAK OF KARMA, I IMPLORE YOU...GIVE HER A BREAK, LORD". - Clark W. Griswald
 
Posts: 2086 | Location: The South | Registered: September 12, 2005Reply With QuoteReport This Post
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Picture of MG34_Dan
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quote:
Originally posted by JoshNC:
I was under the impression that the rubber cocking handle cover is a press fit, does not require epoxy.


The replacements I got definitely were not press fit. Maybe the factory originals were press fit. But either way, there was dried glue present on the charging handle shaft under the broken handle. It is the coffee colored crap in my picture two above.


“Elections have consequences, and at the end of the day, I won.”
– Barack Hussein Obama, January 23, 2009
 
Posts: 2027 | Location: Austin Texas USA | Registered: February 03, 2007Reply With QuoteReport This Post
Bolt Thrower
Picture of Voshterkoff
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I hope you took some pictures of an appropriately sized spent casing pressed onto the charging handle for the heck of it.
 
Posts: 8823 | Location: Woodinville, WA | Registered: March 30, 2004Reply With QuoteReport This Post
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Picture of MG34_Dan
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quote:
Originally posted by Voshterkoff:
I hope you took some pictures of an appropriately sized spent casing pressed onto the charging handle for the heck of it.


If only I would have known, I would have. But, I didn't even think of it. Maybe next time.


“Elections have consequences, and at the end of the day, I won.”
– Barack Hussein Obama, January 23, 2009
 
Posts: 2027 | Location: Austin Texas USA | Registered: February 03, 2007Reply With QuoteReport This Post
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Picture of PGT
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I tend to like SikaFlex 221 for this as that's what auto manufacturers use to bond plastics to metal like a shift knob.
 
Posts: 2178 | Location: Leesburg VA | Registered: December 21, 2014Reply With QuoteReport This Post
Now Serving 7.62
Picture of 10X-Shooter
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This is the first I’ve heard of one breaking. Good to know. Thanks for sharing that nugget!
 
Posts: 5384 | Location: TN | Registered: February 12, 2003Reply With QuoteReport This Post
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I'd go naked, me. If it breaks again engrave that puppy and knock down the sharp bits! Razz

I'm only half kidding
 
Posts: 2366 | Location: Pnw | Registered: March 21, 2009Reply With QuoteReport This Post
You have cow?
I lift cow!
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I'll be damned. I would have not foreseen that as a possibility. Good fix.


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http://defendersoffreedom.us/
 
Posts: 6203 | Location: Bay Area | Registered: December 09, 2007Reply With QuoteReport This Post
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