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Picture of PGT
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I picked up a spare diopter upper a few weeks ago and ordered a steel lower and M4 adapter for it. I put a spare Shockwave blade on a KAK tube on it for now. Last year, I bought a Sig SRD-556 suppressor (direct thread) for my 553 SBR and have been meaning to get around to taking the 3-prong flash hider off....honestly, I've been a bit scared to after having issues on my old 551-A1.

SO....I figured the new upper would be the guinea pig since there's no tax stamp on it (in case things went horribly wrong). Using a butane torch and monitoring temps with a laser thermometer, I saw the loctite flash over right around 500F. I stripped the upper down and put it in a vise, using some strips from an old leather belt right on barrel flats. A firm *snap* with a wrench on the flats of the flash hider and she came loose.

Some pics with the SBR and with the can mounted. Both have the 4-position gas regulator on them so hopefully, it'll work out nicely. I'm guessing the 0.9 setting is for suppressed fire since the stock regulator has the same 1.2/1.3 settings.

On to some pics...



 
Posts: 1077 | Location: Leesburg VA | Registered: December 21, 2014Reply With QuoteReport This Post
Get on the fifty!
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Looks great. Thats interesting yours had any sort of thread locker on it, mine was just torqued on. Let us know how the Sig suppressor performs!
The .9 setting is definitely the one you want. I went with the Griffin Recce 5 on mine using their 3 prong.





When in doubt, pinky out.
 
Posts: 2814 | Location: Oklahoma | Registered: November 07, 2008Reply With QuoteReport This Post
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Wow - looks great Dan!
 
Posts: 1372 | Location: Mid-Atlantic | Registered: December 27, 2002Reply With QuoteReport This Post
Now Serving 7.62
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Nice
 
Posts: 4587 | Location: Southeast Tennessee | Registered: February 12, 2003Reply With QuoteReport This Post
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Beautiful rifles, everyone!
 
Posts: 466 | Location: Louisiana | Registered: September 18, 2003Reply With QuoteReport This Post
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Beautiful rifles all around!

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


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"AND YEA THOUGH THE HINDUS SPEAK OF KARMA, I IMPLORE YOU...GIVE HER A BREAK, LORD". - Clark W. Griswald
 
Posts: 1838 | Location: The South | Registered: September 12, 2005Reply With QuoteReport This Post
Certified Plane Pusher
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Sure are purdy rifles.



Situation awareness is defined as a continuous extraction of environmental information, integration of this information with previous knowledge to for a coherent mental picture in directing further perception and anticipating future events. Simply put, situational awareness mean knowing what is going on around you.
 
Posts: 7451 | Location: Around Lake Tapps, Wa | Registered: September 29, 2005Reply With QuoteReport This Post
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just got my stamp today for my 553, any suggestions on best spot for engraving?? thanks


"All that is necessary for the triumph of evil is for good men to do nothing"
Edmund Burke
 
Posts: 413 | Location: Florida | Registered: February 18, 2004Reply With QuoteReport This Post
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Which model did you get?
 
Posts: 1077 | Location: Leesburg VA | Registered: December 21, 2014Reply With QuoteReport This Post
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553p mine is a few serial#'s down from yours on the bottom


"All that is necessary for the triumph of evil is for good men to do nothing"
Edmund Burke
 
Posts: 413 | Location: Florida | Registered: February 18, 2004Reply With QuoteReport This Post
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yeah, so Diopter? I think I'm going to put mine on the top strap or even on the leading edge of the rear sight mount if we can make it work
 
Posts: 1077 | Location: Leesburg VA | Registered: December 21, 2014Reply With QuoteReport This Post
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yes diopter, I spoke with the engraver today going to figure the best spot when I drop it off. I was wondering what others were doing. One thing is for sure this one took 8 months as an individual F1 and my trust F1 is still pending coming up on 12?? makes absolutely NO sense.....


"All that is necessary for the triumph of evil is for good men to do nothing"
Edmund Burke
 
Posts: 413 | Location: Florida | Registered: February 18, 2004Reply With QuoteReport This Post
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