RayGun19

For that much cash I think I'd rather pick up a C-Mag.

No no. All of that makes perfect sense. I'm a fabricator now, and a bit of an engineer. I guess my deductions were from looking at how the full length and mid-length gas systems of the 7.62 rifles were put together. And the ratio of barrel length to gas block position just pointed me to my conclusion. What you say also makes sense. I had assumed that the bullet needed to still be in the barrel in order to generate gas pressure in the barrel and gas system vs. the sudden decrease in the back pressure once the bullet cleared the muzzle. Hence my reasoning that there needed to be a certain length of barrel after the gas block. I'm no gunsmith. I guess I figured I had better have the gas system in place just as it would be on any 16" barrel 7.62 rifle for operation, as the only reason I want the front sight post to be at rifle length was for sight radius. I do have to use a Heavy Buffer in this rifle with the Magpul UBR stock. And I had wondered if the gas block was at rifle length position, but the barrel was only 16", if that would reduce felt recoil, and therefore no require the Heavy Buffer?????

No, it's not a RRA issue, more of an issue with them telling me one thing, and delivering another, and then telling me it was 4-6 weeks more to have it corrected. I was under the impression that you had to have so-many inches of barrel in front of any gas block in order for the rifle to function properly. As per the M4's that are rifle length hand guards with 16" barrels. They all have a mid or short length, low profile gas block under the hand guards. I guess I just figured the same would apply to any caliber, as the design was the same. Wrong?

I had opportunity to shoot another operators rifle that was set up like that. I liked the idea that the sight radius was the same as what the platform was designed for. And when I got out from under my FN, I decided to build one like that in 7.62. I did some checking, and building an off the shelf AR10 carbine into a full length hand guard model would be a bit tough, as they step the barrel from just in front of the existing gas block to just behind the flash hider. So replacing the existing gas block with a low profile one, and then moving the front sight post forward would be a bit hard. UGH! Oh well. I'm going to modify the RRA unit that I have, and shoot it at some Practical Rifle matches this Summer and see if I like it. If not, I can always sell it and have a rifle built by someone else. I hate that this is more work that it was supposed to be. Had I realized that you had to run a low profile gas block at the mid-length point with a 16" barrel in order to maintain proper gas pressure, I more than likely would have just had an entire rifle built rather than trying to modify something off the shelf. Live and learn. ::)

So, an update. It turns out that the reason they couldn't provide the correct hand guards on on a 16" barrel is they didn't have a low profile gas block. But in the end, the gas block has to stay mid length with a 16" barrel for proper gas pressure. So the mid-length would work fine with just a change in the gas block, and then remounting the front sight/gas block forward for use with the full length hand guards. Next, Armalite has a 90 day wait on getting an AR10. So, I can either go the Summer without any rifle, or modify the LAR-8 and run it for the Summer and order an AR10 in the mean time and sell the LAR-8 after the AR10 come in. UGHHHHHHHH!!!!!!

I don't know if any of you will care or not (and I'm posting it in the general category so that the populous can see it) but I just had my friendly local firearms dealer send back the LAR-8 I've been waiting on for 5 months. It was, after 5 months of waiting, wrong. I had asked for a specific modification, and they failed. Just one, not 9. One, simple modification (that I really just thought would be easier if it was done during assembly, rather than get it, take it apart, and to the mod). All I wanted them to do was to take a full length barrel and hand guard upper, and shorten the barrel to 16" and screw on the birdcage. After my local shop owner asking them directly at the SHOT Show IN PERSON, and then two more telephone calls directly to them from the shop, they kept saying no problem. Enter the crux. I also ordered an M4 variant from them. In the same fashion. The answer there was NO. Which perplexed both the shop and myself. It's basically the same parts. So why one, and not the other? We could get no straight answer to that. In the end with the M4, it was ordered as a separate upper and lower. The upper being ordered as a full length model. No problem there. Place the order. Check for a 4th time that RRA was SURE the LAR-8 could be ordered that way, and not the A4. Yep, no problem was the answer. So, how did my rifle come you ask? Full length STOCK and mid-length HAND GUARDS. Ok, no problem, right? The upper is an "off the shelf item", and I was having the shop add a Magpul UBR stock anyway to the back end. NO. The uppers are serialized to the lower (according to RRA) and can't be separated. Ok, ship the whole thing back. "when can we have it back with the different barrel and hand guard?" "4-6 weeks." Now, I live in Illinois. Outside Chicago. So shipping, even if it could go ground, is the same day. I'd say a week on the outside to swap the barrel and hand guard (just to be nice) and I should have had it back. NO. 4-6 weeks!!!!! I told the shop to tell them to keep it, and order me an AR-10A4 (full length everything this time just to make sure) from Armalite. Same price, and on the shelf, and also in Illinois. At this point, I don't even care if Armalite takes 4 weeks to ship it to me. The principle of the matter, after asking a total of 4 (FOUR) times if they could build what I wanted at the factory vs. just ordering it full length and having my shop do it for $85 is the reason I've made that choice. Had they just said no from the beginning (or at any point during the build before the upper was done so we could change it), I would have my rifle, and would have attended the Practical Rifle match last weekend at ASC. I think Customer Service should be the first thing any company takes pride in. Especially in this economy, and when you have a customer willing to lay down $1200+ in hard earned cash, and willing to pay extra for mods. I'm not pissed, and I'm not bad mouthing RRA. Just letting you guys know my experience, and that what you may think is a straight answer isn't always. Also, Mandi at the Gun Doctor in Roselle is AWESOME. She's been patient with all of this, given me straight answers, checked 4 times on my order to make sure everything was a GO, and has the best customer service of any shop I've been in here in Illinois since moving here in 2002. They'll always get my business, and their experience Armorers are TOP NOTCH.

What about going to a muzzle brake, and a heavy buffer?

So, I got an email back. they say that the elevation drum is no actually specific to either 5.56 or 7.62. And that originally they had made two that were specific, but the military didn't want to stock two separate part numbers (which seems strange), so the drum is "in between". I'm not sure I buy that explanation, but it's what they sent.

Sounds awesome. Once a member, I plan on soliciting to host a Combat Carbine course, consisting of both rifle and pistol. I've talked with a couple of the members, and they were very interested, and said by taking the proper steps it should be a shoe-in. I've been looking at ammo to do the Practical Rifle matches. And I've gotten it down to about $45.00 for military factory-loaded, non-corrosive ammo and be able to use my LAR-8. For the few weekends a year I'll be able to make my schedule work, I can afford that. It's a mini vacation of sorts for me.

I know this posting is old, but you should be able to send your TA01NSN to Trijicon and have the 5.56 (TA01) reticle changed for the 7.62 (TA01B) reticle. I have a TA01B and love it. The only difference is the BUIS on the scope itself. Other than that, it's exactly the same.

1. Get to the range more. 2. Take Spartans Advanced Tactical Rifle course. 3. Get to the range more.

"This releases the bolt and bolt carrier, that which carries the bolt." -Chris Costa I love that scene. <lmao>

I'm in Illinois. I live over by Wheaton. I plan on joining ASC, just a heave work load at my job right now. I'll free up some in a week or so and I'll get out there and join. Do you host the Practical Rifle shoot, or just participate?

I got a deal on the 20# spring. It has the factory spring in it. The 20#er just comes with the deal. I'm not replacing it with another 1911, so I have no need of the spring.

Springfield Armory M1911A1 Mil Spec Parkerized, 6 mos old. In SA box, instructions, 2 GI magazines, etc. 40rnds or so run through it. Safe queen and must go. Comes with: 1 additional GI 7rnd magazine 4 Wilson Combat 8rnd magazines 1 GalCo CON212B concealed holster 1 Parkerized Extended Slide Release 1 Wilson Combat 20# recoil Spring Asking $850. for everything. Eagle Industries SAS Mk III Airborne tac holster available with it for additional $50.00. PM or Email me. I didn't post any photos mostly because its BRAND NEW, minum the 40 rounds I ran through it at the range when I purchased it. None since then, so it is in the same condition as if it were NIB.

I like the KAC 200-600 BUIS as well, but with different ballistics, the elevation drum won't range the same for 7.62 as it does for 5.56. I've emailed them asking if they are planning on making one specific for the 7.62 platform like the M110.

Any updates? I'm wondering the same thing.

Greetings! I live in the midwest. Just happened onto this site looking for 7.62 specific BUIS. Looks like a great site for information and resources. Hoping to meet some others here, anyone shoot out at ASC in Waterman Il? I served in the military for 18 1/2 years, and now own my own fabrication business.