Posted: 12/26/2018 5:21:47 PM EDT
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Steve,
Does RRA make or recommend a manufacture for an adjustable gas block for a LAR-8 X-1? I recently bought a suppressor and i'm having cycling issues, i'm not 100% sure it's gas related, since some of it is double feed's and sometimes it jams a single round on bolt closing (although in roughly 800 round up to this point it's never had an issue w/o a can). It's dented up a few cases pretty good in doing so. Ironically or not, it seems to cycle better with the mil-surplus style 7.62 x 51mm then with say Federal GMM or Hornady, which I'm guessing (wrong or right) could be attributed to the lower pressure. ( I will say that with my LAR-15 CAR runs flawless with the same can.) Thanks for any help. |
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We have an adjustable gas block coming for it...they were supposed to be in from the machine shop last month, but aren't here yet. I don't have anyone in-house to check the delivery with (technically I'm not here either, as we're on a holiday shutdown) or I would give you a current ETA.
Machine shops can be a bit like the cable company. As long as there's a today, there's a next week. And some day next week becomes today, and the cycle repeats. From you're description of running flawlessly without the can and having some issues when running the can, I would assume that it is can-related. It isn't surprising that you wouls have less issues with the gas running the same can on a 223.as the LAR-8's bore is significantly larger and your back pressure is significantly lower. I don't know if an adjustable block will help in that instance, but it the first thing I would try. A regular (223) gas block isn't going to provide the best results as the gas tube will have to be bent to go straight into the receiver (the gas block and the receiver are both taller than standard on the LAR-8). Thanks. Steve/RRA |
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Originally Posted By RyanRRA:
Steve, Thanks for the reply, I mic the dimension of my LAR-8 low profile gas block and those of the SLR 8-C, it looks like I should be able to use it. Unless you are aware of a pitfall. Regards, Check for any tube/carrier key interference once you have it back together and before you fire it. Steve/RRA |
| Everything lines up as for the gas tube and carrier key, no interference, except that they extra height on the gas block above the tube is about 0.020" to tall; if the the milled channel for the gas tube ran the whole length on the RAR TRO RAIL hand guard i'd be in there, so does one of the other RRA hand guards have that channel the entire length and/or have an ID greater than 1.85". Otherwise i'd have to mill/grind out a slot on the current hand guard. |
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That's what I was afraid of. The handguard and low profile gas block were made to work with one another...the gas block will work with other handguards, but the handguard won't easily accommodate other blocks.
Let me see if my design guys can come up with a solution for you. Steve |
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I don't want to take up your guys time looking at a design. I went in through the bottom whole of the hand guard with a 5/16" end mill and took out a depth about 0.200 of material in a lateral slot mirroring the length of the bottom hand guard slot. It got me the clearance i need. It's just not a pretty as the factory, i used some Birchwood Casey Alumi Black to darken the machined surface back up.
I just didn't know if one of your other hand guards had a larger ID, if i wanted it to look factory new. |
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Nope...TRO and DLX are as big as we have....and the newer Light Weight MLOKs are even smaller. User feedback was that our handguards are/were too big and heavy, so we've made efforts to first shave off weight and now to reduce the diameter to meet our clients' expectations.
Sorry. Steve/RRA |