Quote History Originally Posted By Six2Life:
Yes, but you have to cut a custom 7.62x39 carrier for the RLL anyways. As long as that's done to accommodate the same paddle thickness everything should stay consistent.
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Quote History Originally Posted By Six2Life:
Yes, but you have to cut a custom 7.62x39 carrier for the RLL anyways. As long as that's done to accommodate the same paddle thickness everything should stay consistent.
Yes, I am familiar with the RLL and the required carrier (SP1 spec). However, I am still confused about your comment about wanting the MGI upper so you wouldn't disturb the RLL but then mention swapping the BCG. If you are swapping the BCG then I don't see why you just don't swap the entire upper.
Only reason not to do so would be if you are swapping between calibers that use the same bolt face like 556 / 300BLK etc.
Regarding carriers, don't know if you aware but the MGI carriers were already clearanced for AK mags/drums and while they weren't SP1 spec they weren't full auto spec either so less material to mill off.
Otherwise, you could get the KS47 carriers that are milled out for the AK mags/drums them mill those off for your RLL.
Do you have any details on how to add tungsten to the carrier? As in a source for the weights, and how it is attached to the carrier? Are they silver soldered in or something like that?
I have an assortment of carrier weights. SAW used to offer a ramped bolt service for the Colt 9mm and supplied a custom Tungsten weight which is what I have pictured on my site.
KAK makes one that is identical to the short tungsten I have on my site pictured below (2nd from the top).
The bottom one is a 9mm Colt Steel weight so logically, all my weights are compatible with the Colt 9mm bolt hole location. So you would need to have a 1/4" hole drilled into the carrier in the same place you will find a Colt (or clone) 9mm bolt drilled for it's bolt weight.
Link to the KAK Tungsten carrier weight:
https://www.kakindustry.com/9mm-carrier-weight-extra-heavy I don't think their weight includes the roll pin. If KAK doesn't have them, other sources like CMMG have the roll pins. I bought a big bag of like 50 from MSC years ago made from SS.
So if you look at all the links on my site, you can see that I'm pretty big into tinkering and getting the cyclic rate and smoothness to my liking.
Link to the root of my site. In the picture below, that same exact lower configuration I happen to use with my 5.56 Shrike Belt fed upper. Note that I'm using an A5 length buffer tube which is longer....likewise, I'm using a longer RB5007 hydraulic buffer which is the same length compressed as the heavy buffer you linked to.
So you could use an A5 length tube and go with that heavy buffer you linked too.....but I personally like to minimize my changes to the lower and just swap uppers. The upper is where gas optimization obviously happens for gas operated calibers.
I have a lot of uppers of various calibers and I cannot think of one where I would use a 10oz buffer so I would hate to have some super heavy buffer in the lower for just one configuration. By having the additional mass in the carrier gives me more flexibility and less things I need to remember to swap out.
In fact, the 308 Tubb spring works in just about everything I run. If I forgot to swap it, the worse thing that would happen is that the cyclic rate would be faster then I prefer.