Modern Sporter - Build Discussions

[griffin86]

So maybe this has been covered but to install a dust cover I simply grind off the band so that it can fully insert? Seems straight forward enough

I had to grind my dust cover pin 1/8” down for it to fit.

[Z06corvette]

I had to grind my dust cover pin 1/8” down for it to fit.

I had to do this as well, a little less than an eighth.

[JayCarver]

i dont see why it would be any different than a AR15 spring and buffer, but any experience with the VLTOR/BCM A5 kits?

jg

No issues with the A5 system

[Z06corvette]

I'm using the A5 system as well, hope to test mine this weekend.

[mileageman]

i dont see why it would be any different than a AR15 spring and buffer, but any experience with the VLTOR/BCM A5 kits?
also, while i have you, any feedback if the BCM MCMR or QRF rails are fitting without modification and/or with the antirotation?

thanks in advance

jg

The VLTOR A5 kit was developed for a carbine length gas system on M4 carbines to mimic the rifle buffer. On a rifle length gas system it is not needed. Some people like the extra length of the A5 buffer tube offers over a carbine buffer tube.

I have BCM MCMR rails on two of my uppers, I had no issuies fitting them. They fit perfectly.

[mileageman]

So maybe this has been covered but to install a dust cover I simply grind off the band so that it can fully insert? Seems straight forward enough

If using a milspec pin, it is a tiny c-clip, it can be removed and then used fine. If the pord door rod has a enlarged end, it could be ground down, but probably easier to just get a milspec straight (with out c-clip) port door rod. V-7 Weapon systems also makes a straight aluminum port door rod (available at RDSC) if you are trying to save ever tiny little bit of weight.

[Z06corvette]

The VLTOR A5 kit was developed for a carbine length gas system on M4 carbines to mimic the rifle buffer. On a rifle length gas system it is not needed. Some people like the extra length of the A5 buffer tube offers over a carbine buffer tube.

I have BCM MCMR rails on two of my uppers, I had no issuies fitting them. They fit perfectly.

I'm running a mid-length gas system so maybe still of value.

[jjuice]

apologies for not reading the first 139 pages - is there a list of compatible rails available?
specifically i am look at the BCM MCMR or QRF rails (not sure if their anti-rotation piece will fit)

tx
jg

Love my BCM. Super snug fit.

[Chargerguy]

Love my BCM. Super snug fit.

[HotSoup]

Love my BCM. Super snug fit.

Nice. I was wondering what an MCMR would look like on the upper, now I have a better idea