HRA gas cylinder?

[finloq]

HRA marked gas cylinder lock screw, but the rest? No stampings of any kind and no dimple on a wide base.






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[Kirk]

How wide do the ears on the front sight measure? That would suggest a maker.

Front Sight Ear widths
SA&HR=5/8 or .625"
HRA ft sights often run from .745" to .785" or more
WIN=13/16 or .8125"
IHC=7/8 or .875"
measured from outside edges the "ears" at widest point.

[finloq]

I don't know yet, Kirk.
I am assuming that the sight is SA (based upon pictures).
The lock screw is obviously an HRA.
I know of no way to tell if the high hump is any specific maker.
The rest appears to be HRA, but I am no expert.

[Russ661]

I seem to remember reading somewhere that an offset stake on the stacking swivel screw was a hallmark of HRA but I could be mistaken.

[stonecutter2]

HRA front sight screw had some ribbing around the edges, instead of being smooth. The ribs only go 1/2 way from front to back or so. My HRA front sight has this screw.

So...that would at least cover the front sight screw :P

http://battlerifle0.tripod.com/id6.html