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Posted: 10/27/2013 10:40:55 AM EST
[Last Edit: 10/27/2013 10:47:27 AM EST by 1999cutiger]


It is model JPGS-5B.

I am hoping someone can tell me for sure...before I order one. It looks like it is gonna be really close...
Link Posted: 10/27/2013 11:28:31 AM EST
I thought I read somewhere that the DD rail has got an ID of 1.440. Do you know the OD of that gas block?
That's all I have to help but good luck as I am trying to get that rail to put on a Bushmaster ORC. It has the factory gas block that I intend to machine down to fit. Ill put this here to watch for an answer from someone who knows.
Thanks OP.
Link Posted: 10/27/2013 11:59:46 AM EST
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Originally Posted By Throwsabender:
I thought I read somewhere that the DD rail has got an ID of 1.440. Do you know the OD of that gas block?
That's all I have to help but good luck as I am trying to get that rail to put on a Bushmaster ORC. It has the factory gas block that I intend to machine down to fit. Ill put this here to watch for an answer from someone who knows.
Thanks OP.
View Quote


I think all of the dimensions are good. The only part that concerns me is the lower portion where the bolts are...it looks like it might be too wide.
Link Posted: 10/27/2013 1:52:32 PM EST
JP Adjustable Gas System for AR-type rifles.

?Low profile, rail-free design allows installation under hand guards.
?Material: 416 stainless
?Finish: Black oxide
?Weight: 2.25oz
?Length: 1.28"
?Height: 1.40"(overall), .775"(over bore)
?Width: .85"
?Attachment: 6-32x1/2" socket head screws, T15 Torx drive (included) (includes 5/64x5/16 roll pin for gas tube installation)
?Adjustment: 8-32x3/8" stainless set screw, 5/64 hex drive (included)

Gee, that wasn't too hard.
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