My MPX Project! Help Me decide.

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POKE1911

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My Mpx project (Which has consumed most of my gun funds over the last couple years) is coming to completion.
I started with the Standard MPX Gen 1 pistol.
Applied for SBR - waited a year (July 2016) and got my stamp.
Purchased an Omega 9k suppressor - ( again July 2016) got my stamp.
Had the barrel cut and threaded at 4.5” inch added 3 Lug device
Attached Rugged Flush 3 lug mount to suppressor
Installed Safe Harbor KES stock (liked it a lot better than the OEM)
Installed a BFS binary trigger system - hell yeah!
Sawpped out the oem charging handle for the raptor.
Swapped out the OEM grip with a magpul K2.
Trying to decide between the Sig optic and my MRO. Like them both but like the mro better on my AR. Not sure how I’ll end up.
Found a great deal on an MPX-K hand guard. That’s where I need help deciding.

Pros for “k” rail:
Lighter
Shorter - fits in back pack without suppressor.
If I shoot unsupressed (rare) the barrel is not tucked in hand guard.
Keymod for easy attachment.
Less potential heat transfer from can to hand rail.

Pros for original:
Love the shrouded look.
More space on rail for hand / accessories.


My questions would be, what looks like it would work better? Am I right in thinking that if I heat up the can, it will heat up the handguard? With the BFS trigger the can gets pretty warm. I thought about getting a high heat jacket for the can if I keep it in the “k” configuration. Which do you prefer?
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Riley

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Personally, I'd say either would be fine. One quick question, why the SBR instead of simply starting with a bare or pistol lower and calling it that?

Oh wait, reading comprehension fail. You did start with a pistol lower. Why designate it an SBR instead?
 

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