Sure. I tried filing them down and still had my doubts about clearance and decided to shoot without the pic rail. I haven't shot the gun with any mlok attachments just to rule it out.
Ridgeline Defense RD-15 LPR
- Thread starter B4forever
- Start date
Im going to grab a ridgeline upper when back in stock. As far as the AR10/ RD-10 in future development goes, I think a cool idea would be like the POF revolution, semi-monolithic upper w/ arca, with the RD-proof barrel. I'm probably alone in this, haha. But I've always liked the smaller receivers and smaller bolt carriers in them, makes for a lite and smooth shooter. IMO it would be the one ar10 to rule them all.
Got my builders kit. I guess I can see how people say the hardware is meh. Gas block is tight, mine is a 18” proof barrel with a badger MK12 GB. Fits either way space, but it’s close. I think I’d get a smaller profile gas block if I could. But this is what I had.
Attachments
It’s tight, BUT it has plenty of room. It was hard to get centered photos with the phone. I wouldn’t go any bigger.
Not yet, my lower is still in 10 day jail (CA law). But I know the barrel shoots well already as I pulled it out of another receiver set. I’m not worried, it will be fine. I am interested to see if a adjustable gas block will fit correctly?
Im sure a few will start to pop up here and there. I might be pulling mine and selling it. But TBH there's nothing special about that barrel. Sure the gas block is kinda cool in how it works but noting that really makes a shit bit of difference... Their upper design is really what's rad about the RD15.
Just get a Craddock Bartline.
Yep beside our gas block/system setup it’s just a Proof barrel. Our profile around the gas block journal does help handle erosion around the gas port a little better but most people probably wouldn’t be able to see much difference. Over all though Proof is phenomenally consist, I’ve only seen one major issue barrel out of hundreds test fired and an average of 0.6-0.7 MOA, with outliers up to 1 MOA or down to 0.3’s.
I you really want one in our profile you can probably reach out to sales, occasionally there’s unallotted materials that I am sure you could sweet talk your way into.
Pretty sure the gun will not operate with the gas tube outside the receiver like that.
Be very careful torquing the tiny retention screws in the mechanical locking tabs on the handguard. Use some loctite because you can't apply much torque. Heat the backend of the handguard to get it on.
I keep hearing about builders kits. Where can you buy them? Would love a upper/rail/barrel nut kit for some builds.
Thier out of stock, they'll post the option to buy once they have more.
I heard through the grapevine there may be some updates/changes coming to the LPR and thats why theyre out of stock. Any teasers and/or an ETA on uppers/full rifles?
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Doubt it would happen, but would love to see an 18" 6arc version with a 15" handguard with a six8 magwell lower to take advantage of the new magpul ICAR arc mags.
Id also like to see an 18" barrel version of the current LPR with the current rail, so I could run my Griffin PSR brake and PSR 5 over the barrel can on it.
Alright, quick update since I have gotten a few inquiries.
1. “New” LPR - there is an “ICAR” variance of the LPR that is under consideration. As I have mentioned before here and in other threads, the preliminary testing of adaptating the current LPR to 6 ARC has supported our antidotal experiences from watching students, which is that cartridges like the 6 ARC can technically function within the confines of the “standard” AR15 receiver dimensions but at the cost of reliability/longevity of parts.
So to do 6 ARC properly, it really requires an intermediate action like the ICAR which is going to take some time. The good news with that is it will allow for integration for things like full ambi controls (
) that people want, as well as some enhancements that will make our lives easier on the manufacturing side. No ETA as of right now as this and the large frame have taken a back seat to the two following items.
2. The RDM4 - As alluded to in the past we are producing a TDP spec rifle that utilizes forged upper/lower receivers. The goal here is to bring some of the hand guard improvements we developed in the LPR but at a more cost effective price point and parts that will more readily interface with standard AR15s. Additionally we have been working hard on being able to offer a new line of barrels that support increased barrel life while maintaining accuracy under heavier firing schedules. This last part has been a process that has taken quite a bit of effort but in my opinion is going to lay the groundwork for some interesting opportunities.
This line will include complete rifles/uppers but also hand guards system as well. ETA is September 2025.
3. Current inventory shortages - We are pretty much not in stock for anything at the moment because manufacturing is under way to a new location. We’ve learned some things over the last two years in manufacturing and we are making some strides forward to streamlining efficiency of development and manufacturing timelines. We kinda tried to time this for the summer since it is the historical slow season in the industry. ETA is September to be back on track.
1. “New” LPR - there is an “ICAR” variance of the LPR that is under consideration. As I have mentioned before here and in other threads, the preliminary testing of adaptating the current LPR to 6 ARC has supported our antidotal experiences from watching students, which is that cartridges like the 6 ARC can technically function within the confines of the “standard” AR15 receiver dimensions but at the cost of reliability/longevity of parts.
So to do 6 ARC properly, it really requires an intermediate action like the ICAR which is going to take some time. The good news with that is it will allow for integration for things like full ambi controls (
) that people want, as well as some enhancements that will make our lives easier on the manufacturing side. No ETA as of right now as this and the large frame have taken a back seat to the two following items.2. The RDM4 - As alluded to in the past we are producing a TDP spec rifle that utilizes forged upper/lower receivers. The goal here is to bring some of the hand guard improvements we developed in the LPR but at a more cost effective price point and parts that will more readily interface with standard AR15s. Additionally we have been working hard on being able to offer a new line of barrels that support increased barrel life while maintaining accuracy under heavier firing schedules. This last part has been a process that has taken quite a bit of effort but in my opinion is going to lay the groundwork for some interesting opportunities.
This line will include complete rifles/uppers but also hand guards system as well. ETA is September 2025.
3. Current inventory shortages - We are pretty much not in stock for anything at the moment because manufacturing is under way to a new location. We’ve learned some things over the last two years in manufacturing and we are making some strides forward to streamlining efficiency of development and manufacturing timelines. We kinda tried to time this for the summer since it is the historical slow season in the industry. ETA is September to be back on track.
Thanks Rudy...excited to hear the ICAR version is being discussed/developed!Alright, quick update since I have gotten a few inquiries.
1. “New” LPR - there is an “ICAR” variance of the LPR that is under consideration. As I have mentioned before here and in other threads, the preliminary testing of adaptating the current LPR to 6 ARC has supported our antidotal experiences from watching students, which is that cartridges like the 6 ARC can technically function within the confines of the “standard” AR15 receiver dimensions but at the cost of reliability/longevity of parts.
So to do 6 ARC properly, it really requires an intermediate action like the ICAR which is going to take some time. The good news with that is it will allow for integration for things like full ambi controls (
2. The RDM4 - As alluded to in the past we are producing a TDP spec rifle that utilizes forged upper/lower receivers. The goal here is to bring some of the hand guard improvements we developed in the LPR but at a more cost effective price point and parts that will more readily interface with standard AR15s. Additionally we have been working hard on being able to offer a new line of barrels that support increased barrel life while maintaining accuracy under heavier firing schedules. This last part has been a process that has taken quite a bit of effort but in my opinion is going to lay the groundwork for some interesting opportunities.
This line will include complete rifles/uppers but also hand guards system as well. ETA is September 2025.
3. Current inventory shortages - We are pretty much not in stock for anything at the moment because manufacturing is under way to a new location. We’ve learned some things over the last two years in manufacturing and we are making some strides forward to streamlining efficiency of development and manufacturing timelines. We kinda tried to time this for the summer since it is the historical slow season in the industry. ETA is September to be back on track.
So the forged version will still have the same handguard attachment method?
Thanks!
Whatever happened to the shorter option? Not everyone wants a 15" rail, but I guess I can fire up the bandsaw...
The RDM4 will use the same attachment method for the hand guard as the LPR but it will attach to a steel barrel nut in a more traditional manner to allow for use on TDP spec upper receivers. The combination of attachment and barrel nut material reduces the amount POI shift from the hand guard interface fairly significantly (in the range of 0.1-0.2mils) compared to designs using lighter/less rigid materials for the barrel nuts and that attach via a “pinch lock” method, which typically demonstrate 0.3-0.5mils of POI and in some cases a whole 1.0mils shift while under nominal influence from shooters interacting with barricades or tripods.
In a nut shell the RDM4 is designed to get the most out of “basic” AR15 components by minimizing POI shifts from the hand guard and POA shifts if LAMs attached to said hand guard.
Current lengths are focused on 11.5”, 14.5”and 16” (basically the hand guard with come to just behind the muzzle device with 1/4 to 1/2 of play) and will be in Black and FDE, MLOK and the MLOK/Arca combo seen in the LPR hand guard.
There is a single 11.5” MLOK only LPR concept rifle we built for reasons. I like the idea of offering different LPR barrel and hand guard options and I think it will be a thing at some point in the future once LPR production is back on track.
Mark me down for a 6arc
Also
Could really use a upper/handguard for this 350 legend barrel I have sitting here if you have any laying around
Digging what I have so far
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I've seen a few of these around, they have a Goofy name that starts with a G almost like it's some dickheads last name.
I was thinking of the Rmod barrels SOLGW was talking about in their MK1 video.I've seen a few of these around, they have a Goofy name that starts with a G almost like it's some dickheads last name.
I was just giving Rudy some friendly shit.
The truth is Geissele's CHF Chrome Lined barrels have been delivering exceptional and consistent results, kinda like the Milk Man was about 9 months before @DeathBeforeDismount was born
I'm sure Rudy and the people at Ridgeline have seen thier fare share of Geissele rifles go down during thier classes, but I can guarantee you it wasn't due to the barrels themselves but to the inherent complexities of Gas Guns and thier plethora of imperfections and a huge amount of operator error.
I actually haven’t seen too many Geissele rifles come through, but I only teach occasional now. All together though what I’ve seen has been pretty good in regards to barrel performance/reliability.I was just giving Rudy some friendly shit.
The truth is Geissele's CHF Chrome Lined barrels have been delivering exceptional and consistent results, kinda like the Milk Man was about 9 months before @DeathBeforeDismount was born
I'm sure Rudy and the people at Ridgeline have seen thier fare share of Geissele rifles go down during thier classes, but I can guarantee you it wasn't due to the barrels themselves but to the inherent complexities of Gas Guns and thier plethora of imperfections and a huge amount of operator error.
Yes this is one of the failures points of the 6ARC that needs to be addressed. There’s been pretty substantial improvements made in materials but truthfully I think it simply asking to much for long term reliability especially with consideration for HP cartridges that are on the horizon.
