Mornin,
How would you feel about a fore end which has integral arca Swiss rails? Has anyone already done it?
How would you feel about a fore end which has integral arca Swiss rails? Has anyone already done it?
Integrated arca rails?
- Thread starter Thunderskunk
- Start date
I believe the OP was in reference to AR style rifle but it is vague. The major chassis companies have them built in on their comp level systems and MPA includes on all chassis.
Good point. I am not sure the AR design lends itself to a rail system like a flat bottomed stocks and chassis.
Kind of. I’m machining a chassis mid-section, and the plan was to use an AR fore end for the front. I’m bending over backwards to adapt this to my chassis and fit over the larger barrel diameter. I’ll probably just make something open-top or have a top cover that bolts on. If I’m going that route, I’ll just cut Arca dovetails into it.
Hi,
AR forends tend to flex too much when compared to proper forend designed for a chassis system.
Most AR forends are 6065 as to where the chassis companies are mostly 7075.
The connection method of AR forend to chassis center section is not conducive to reducing the forend flex.
Sincerely,
Theis
AR forends tend to flex too much when compared to proper forend designed for a chassis system.
Most AR forends are 6065 as to where the chassis companies are mostly 7075.
The connection method of AR forend to chassis center section is not conducive to reducing the forend flex.
Sincerely,
Theis
I’m convinced I don’t want to use an AR hand guard. McRees apparently did something where you mounted the grip on the outside with the tube broach facing down, but it looks ugly, bulky, and as you say it’s just going to flex. I was thinking I was saving time and energy, but it sounds like that’s where it’s needed.
This stems from my lack of experience BTW: I’ve literally never heard of an ARCA rail before yesterday. Come to find out they’re almost necessary on a PRS rifle and fairly popular. I’ve ordered a cheap rail just for reference as I’ve never seen one before, or at least recognized it as something other than dovetails on the side of a chassis.
Hi,
What??? I am not following in regards to the statement bolded above.
What does the grip mounting have anything to do with the forend and how it attaches?
Sincerely,
Theis
I was using “grip” interchangeably with “fore-end.” Sorry ‘bout that. I’m training myself not to call it a “foregrip” as that’s what I’m used to, but it seems to cause a lot of confusion. To my credit, I’ve never had a grip mounted to a fore-end anyways, always just laid it in my hand or on a sandbag.
I imagine if I constructed the fore-end adaptor to the chassis so it mounts externally rather than using a barrel nut, I might gain some rigidity, but it’s still a long aluminum part no matter how you mount it. That was my only point.
Just about every chassis company has a model where the barrel is wrapped. Most just have an ARCA rail as an add on since it very ergonomic and defeats the propose. I may be wrong but I believe JP is the only one that has it machined into the forearm tube.
I’m actually using 7075, trying both T651 and T7351; the latter having a few more corrosion resistant properties. It gums up a bit less than 6061.
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