DD MFR vs BCM MCMR

[Dutch110]

I've got both, the DD MFR and the BCM MCMR. The DD would be my personnel preference but honestly it really doesn't matter too much which way you go, both are duty ready. I also have a CMT Mlok rail that I like very much. Geissele would probably be the way to go if you want the most robust rail, however, you are going to pay for it in cost and additional weight.

Plus one on the CMT rail. I have not had the chance to run it hard yet but very much impressed with the quality and robustness. At any price they are good rails but at what they charge they are downright bargains IMHO.

[munch520]

Of what's listed, I'd go BCM OP.

SLR Ion rails are worth a look too IMO. Very solid mounting system, 7 sided Mlok, tons of length options, and 7075 instead of 6061.

10.7" SLR Ion on a 11.5"

[grizzman]

Of what's listed, I'd go BCM OP.

SLR Ion rails are worth a look too IMO. Very solid mounting system, 7 sided Mlok, tons of length options, and 7075 instead of 6061.

10.7" SLR Ion on a 11.5"

Which series is 7075?


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[munch520]

Which series is 7075?


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The Ion Lites. Or at least they used to be, if material availability is tight they may have switched.

[grizzman]

The specs state the barrel nut is 7075, but doesn't specify the rail's material. It seems the 7075 version was called the HDX or Heavy Duty, which has been fairly recently discontinued, but they're still available from a few vendors.

My only DD rails are old Lite quad rails. I've got several KMRs and KMR Alphas. I've needed to heat up every BCM rail so even though DD's attachment method seems more sturdy, I doubt I could apply enough torque to the handguard to rotate it. I agree that the BCMs seem to favor light weight over strength.

[munch520]

The specs state the barrel nut is 7075, but doesn't specify the rail's material. It seems the 7075 version was called the HDX or Heavy Duty, which has been fairly recently discontinued, but they're still available from a few vendors.

My only DD rails are old Lite quad rails. I've got several KMRs and KMR Alphas. I've needed to heat up every BCM rail so even though DD's attachment method seems more sturdy, I doubt I could apply enough torque to the handguard to rotate it. I agree that the BCMs seem to favor light weight over strength.

They might've changed it then, they used to explicitly state 7075 for the rail as well.

[The_War_Wagon]

I have only had DD quad rails before and while they are solid, its too bulky. As for their mlock stuff I can't comment. I do have 3 other rifles with the BCM MCMR and I love them. All things the same the BCM looks like they are cheaper. Both are top quality manufacturers and I don't think you could go wrong with either.

I swappedoutmy old DD quadrails for the MCMR onmy HD rifle afew years ago. The rifle felt pounds lighter afterward & can highly recommend the MCMR as it's given good service since

[1168]

I've hated every skinny MLOK rail I've used, including 2 or 3 MCMRs. Too narrow for my hand size, and they get hot as shit faster than the fatter MLOK rails and definitely faster than God's favorite, the 1913 quad rail.

This right here. I’ve regressed to grating cheese with DD and Larue quads on most of my guns.

OP, if you’re in need of MLOK and considering DD, take a look at the MFR XL rails, too. The shovelnose is silly (opinion, not fact), but it is dimensionally similar to the KAC URX4, like .1” larger.

[SFW]

Well, I ended up going with the MCMR. The extra $100 didn’t seem necessary at this time. The only things that will be mounted to it are a KAG and a Mini a scout light. And once they are in place, they won’t be moved.

Thank you all for the input.


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