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Magnetospeed on M1A USGI flashhider

1180 Views 9 Replies 6 Participants Last post by  stlm14
4
There have been a couple threads on this but here is how I got my Magnetospeed to fit on an M1A with USGI flashhider.

The problem is that the sensor will not clear the long flashhider on the M1A. It needs to move forward an inch or so, but the bayo lug is in the way.

Basically I got a second set of spacers and trimmed to fit so that the sensor clears the flashhider with slid forward behind the bayo lug.
Turn the I-shaped spacers into a T-shaped spacers.
To compensate for the small step between the flashhider and barrel i used a thin piece of silicone and it bit of glue.
This is all 3 plastic spacers and the thicker rubber one. I cut them on a miter saw but they try to kick so i'd use a hand saw next time.

I have not seen it slide around under recoil.

The the sensor seems like its a bit low from the bore axis but i get good reading on normal sensitivity. I guess the 1/8th spacer could be removed it ever becomes and issue.

It is so handy to be able to just go chrono a few loads when i have time at the indoor range.

BTW i use a laser boresighter and piece of paper to gauge the clearance between bullet and sensor.

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Nice job McGyver 馃憡馃従馃槀 that鈥檚 pretty bad a$$ I鈥檝e had to resort to using my cheap questionable reading chrony because of this issue but you are a genius.
Nice, but it won't work with the cheaper "sporter" version because the sensor is shorter. May just take off the FS.
Get a screwed up bayonet and make a mount.
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You might also try mounting the unit on the side of the barrel instead of the bottom. It doesnt care where its mounted.
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You might also try mounting the unit on the side of the barrel instead of the bottom. It doesnt care where its mounted.
Really - I thought about that. I also found some sites that have Picatinny mounts that will work, since one of the rifles is in a Sage chassis
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Pic mount offered by Magnetospeed only works with the V3, not the Sporter (same applies to the tapered spacer kit, which I hadn't realized). Two reasons why I'll be putting a Sporter up for sale...
Thanks all. Will just take off the FH. I am switching the standard for a NM anyway
Thanks all. Will just take off the FH. I am switching the standard for a NM anyway
Someone here recently pointed out that SA uses reamed flash hiders on all models, not just the ones where its supposed to be a feature, such as the Loaded. So, you might want to measure your I.D. with a pin gauge to see if you already have a match-accurized spec birdcage.
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