It's popular because the military teams started doing it and the teams started doing it because it was easier than re-bedding all the rifles when only a couple really needed to be re-bedded halfway through the season. From the perspective of the shooter it doesn't really do anything for you. Not many people do double lugged rifles and there's a reason for it (expensive and not really beneficial).įrankly, I'd skip the rear lug as well, especially if it drives out your delivery time. LRB makes a rear lugged receiver, not a double lugged one. SEI also does excellent builds but I don't know if they are taking on new builds at this time. While I have not had to deal with LRB directly I've heard good things about them, and Ted Brown (who built my M25) is a very good guy who is easy to get a hold of and work with. If they ship you a rifle with a problem, they will take care of it promtply. SA certainly has excellent customer service and a proven track record of service. The M25 receiver just plain works with no fuss, looks good, and is a very stout piece. Everything is integral, no adjusting a mount, no hoping the side of your receiver was cast & machined properly for a good mount fit, etc. I've messed with scope mounts (ARMS and SEI) and while they do work the LRB M25 is the way to go IMO for scoping an M1A. There are also the forged Smith Enterprise receivers out there that are pretty hard to come by (and don't have an integral scope mount.) while a civvy user will probably never wear out or break a properly made investment cast receiver (Fulton, SA, etc.) a hammer forged receiver is stronger. forged debate that plays out over and over on all the M1A forums. While the Fulton is a perfectly acceptable piece (fit & finish is good, functions flawlessly) the finish & machining quality on the LRB receiver is excellent and better than the Fulton.
LRB receivers are of superb quality, I have both an LRB M25 built by Ted Brown with all TRW parts I gathered up and I also have Fulton Peerless that was my first M1A. I started with a M1A with NM open sights and after playing with scope mounts I decided I'd much rather build a second M1A that was a dedicated scoped rifle. The Norinco/Polytechs can have problems as well but my Chinese clones were the equal of any of my LRBs.My situation is similar. To summarize, I think LRB puts out a good receiver but they are far from perfect (at least based on the ones I have owned). To be fair LRB fixed the bolt stop issue promptly but they more or less told me to live with the "speed bumps" in the receiver heel. This would cause the stop to release spontaneously. I also had issues with the area for the bolt stop being machined to narrow. Although very slight I have wondered if this causes increased bolt wear from these shallow "speed bumps". On two of my LRBs there were shallow ramps in the heel cavity where the top rear rounded section of the bolt rides. Most notably some of the receivers were produced with rear sight serrations that were shallow.
I did have another bare LRB receiver which I sold off. I have owned 2 Chinese M1A clones (now 1) and currently own 2 LRB's (1 built by Smith Enterprise and 1 built by LRB). USGI, Chinese and Taiwanese receivers are forged** Both are suitable for hardening using heat treatment. 8620 steel contains trace percentages of molybdenum, manganese, nickel and chromium. American receivers are made of 8620 steel and the Chinese receivers made of 5100 steel. They are the material, heat treatment and dimensional geometry.
**Receivers - There are three important factors in determining the quality of a M14 type rifle receiver. The Chinese receivers are of good quality steel and are either machined from barstock or forged and machined (can't remember which). Here's a link for some additional information: Just a suggestion however I wouldn't even consider replacing the Norinco receiver you have.
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