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Posted: 4/3/2023 12:47:14 AM EDT
[#1]
Get a one piece cantilever mount.
You don't want to mount a ring on the handguard and "bridge the gap" and due to the compact nature of the receiver, if you mount both rings on the receiver you're going to have your scope pushed back probably too far. This is why the cantilever mounts were invented in the first place. Lots of US made options - ADM, MI, larue, |
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Posted: 4/3/2023 12:57:12 AM EDT
[#2]
https://www.primaryarms.com/primary-arms-30mm-plx-cantilever-mount-1.5-pa-plx-cm-30-1.5
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Posted: 4/3/2023 1:14:02 AM EDT
[#3]
On a standard large frame AR you can make do with rings as the upper receiver is long enough that you can position the scope as needed to fit you.
The SFAR receivers are nearly identical in size to an AR15, which means a much shorter upper receiver rail. This means you’ll have limited room to move the scope forward to set proper eye relief without “bridging the gap” with one ring on the receiver and one ring on the rail (unless you’re stupid tall and only use A2 or longer stocks). Do yourself a favor and get a one piece cantilevered mount. There’s a plethora of quality options available. Also, head to the website and product page for whatever scope you’re using and search out the user manual. Most manufacturers will publish detailed dimensional data for their scopes. Find the OD of the objective lens (make sure it’s the OD as the objective size advertised with most scopes is the actual lens diameter, not the OD of the objective bell) then divide it in half (convert to inches if necessary). The answer to that is the minimum ring centerline height needed to clear the top rail on an AR. |
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Posted: 4/3/2023 2:09:48 AM EDT
[#4]
Generally, 3" eye relief - 2" cantilever. 4" eye relief - 3" cantilever. Account for the ocular to front of turret bulge length as well.
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Posted: 4/3/2023 6:44:27 AM EDT
[#5]
IMO a 50mm bell on an AR-15 is too big.
I think it's too big for most bolt actions. I like GG&G or PRI scope risers and whatever quality rings you prefer to obtain the height you prefer. I can use anything between 1.350" to 1.700". 1.400" is about perfect for me. Most risers are .50". .900" rings gets me into my sweet spot. I prefer to set scoped AR-15's up to shoot from prone, that's why I like a lower scope height. I have RDS set for both absolute co-witness and lower 1/3. Both work fine IMO. I have some 1-6 LPVS's set up with a higher scope centerline. I have use Badger Ordnance, NightForce, Leupold Mk 4's, TPS and EGW and all of them have been good. I don't recommend cheap rings on a self-defense rifle. |
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Posted: 4/3/2023 7:33:09 AM EDT
[#6]
Quote HistoryIf you get this one you can add this and get a forward mounted red dot at 12 o clock: https://www.primaryarms.com/primary-arms-30mm-plx-cantilever-mount-1.5-pa-plx-cm-30-1.5 |
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Posted: 4/3/2023 12:40:51 PM EDT
[#7]
Quote HistoryQuoted: IMO a 50mm bell on an AR-15 is too big. I think it's too big for most bolt actions. I like GG&G or PRI scope risers and whatever quality rings you prefer to obtain the height you prefer. I can use anything between 1.350" to 1.700". 1.400" is about perfect for me. Most risers are .50". .900" rings gets me into my sweet spot. I prefer to set scoped AR-15's up to shoot from prone, that's why I like a lower scope height. I have RDS set for both absolute co-witness and lower 1/3. Both work fine IMO. I have some 1-6 LPVS's set up with a higher scope centerline. I have use Badger Ordnance, NightForce, Leupold Mk 4's, TPS and EGW and all of them have been good. I don't recommend cheap rings on a self-defense rifle. Most shooting will be done from the prone position with this platform. |
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Posted: 4/3/2023 12:58:37 PM EDT
[#8]
Quote HistoryQuoted: Most shooting will be done from the prone position with this platform. Quote HistoryQuoted: Quoted: IMO a 50mm bell on an AR-15 is too big. I think it's too big for most bolt actions. I like GG&G or PRI scope risers and whatever quality rings you prefer to obtain the height you prefer. I can use anything between 1.350" to 1.700". 1.400" is about perfect for me. Most risers are .50". .900" rings gets me into my sweet spot. I prefer to set scoped AR-15's up to shoot from prone, that's why I like a lower scope height. I have RDS set for both absolute co-witness and lower 1/3. Both work fine IMO. I have some 1-6 LPVS's set up with a higher scope centerline. I have use Badger Ordnance, NightForce, Leupold Mk 4's, TPS and EGW and all of them have been good. I don't recommend cheap rings on a self-defense rifle. Most shooting will be done from the prone position with this platform. Most mounts are about 1.5" over the rail anyway which is fine for 50mm objective scopes, so it doesn't really make a difference. |
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Posted: 4/3/2023 1:07:16 PM EDT
[#9]
LARUE |
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Posted: 4/3/2023 6:22:36 PM EDT
[#10]
Quote HistoryQuoted: he's saying a 50mm objective lens is too large because it requires a higher centerline mount/rings, which he finds higher than ideal for prone shooting. Most mounts are about 1.5" over the rail anyway which is fine for 50mm objective scopes, so it doesn't really make a difference. I have a x50 on my 20" DMR and it does have plenty of room to spare, with a standard height mount. Any lower mount and would I have to scrunch my face into the stock. My stock also has an adjustable comb so I can get higher if need be, but can't go lower. |
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Posted: 4/3/2023 6:32:10 PM EDT
[#11]
Quote HistoryQuoted: I have a x50 on my 20" DMR and it does have plenty of room to spare, with a standard height mount. Any lower mount and would I have to scrunch my face into the stock. My stock also has an adjustable comb so I can get higher if need be, but can't go lower. Quote HistoryQuoted: Quoted: he's saying a 50mm objective lens is too large because it requires a higher centerline mount/rings, which he finds higher than ideal for prone shooting. Most mounts are about 1.5" over the rail anyway which is fine for 50mm objective scopes, so it doesn't really make a difference. I have a x50 on my 20" DMR and it does have plenty of room to spare, with a standard height mount. Any lower mount and would I have to scrunch my face into the stock. My stock also has an adjustable comb so I can get higher if need be, but can't go lower. i was just explaining the comment, not endorsing his point of view. |
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Posted: 4/3/2023 8:23:10 PM EDT
[#12]
Quote HistoryQuoted: borderpatrol probably has a cheek structure that puts his eyeline lower naturally, making 1.5 seem high to him in the prone. i was just explaining the comment, not endorsing his point of view. I was not taking exception, was just providing reinforcement. Perhaps was not clear enough on that. |
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Posted: 4/3/2023 8:24:13 PM EDT
[#13]
Got this to the range over the weekend on SFAR, does the job and is very lightweight. No QD however.
https://www.aeroprecisionusa.com/ultralight-30mm-extended-scope-mount |
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Posted: 4/4/2023 4:11:48 AM EDT
[#14]
Quote HistoryQuoted: Got this to the range over the weekend on SFAR, does the job and is very lightweight. No QD however. https://www.aeroprecisionusa.com/ultralight-30mm-extended-scope-mount Where is this made? |
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Posted: 4/4/2023 5:55:00 AM EDT
[#15]
Quote HistoryQuoted: Where is this made? |
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Posted: 4/4/2023 10:30:22 AM EDT
[#16]
Quote HistoryQuoted: Got this to the range over the weekend on SFAR, does the job and is very lightweight. No QD however. https://www.aeroprecisionusa.com/ultralight-30mm-extended-scope-mount I have an Aero mount on my DMR, never will buy one again. Royal PITA to keep the reticle plumb and level while torquing down. Their durability has also come into question. |
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Posted: 4/4/2023 2:36:03 PM EDT
[#17]
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Posted: 4/4/2023 3:40:55 PM EDT
[#18]
https://warnescopemounts.com/qdxskel30tw-qd-xskel-30mm-black/
https://www.admmfg.com/recon-m-mount https://www.larue.com/products/lt204/ Remember... if the "rings" are split top to bottom... 
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Posted: 4/4/2023 4:40:13 PM EDT
[#19]
Quote HistoryQuoted: I have an Aero mount on my DMR, never will buy one again. Royal PITA to keep the reticle plumb and level while torquing down. Their durability has also come into question. It was a pain to get the scope installed... I tried it 6 or 7 times with rotating the scope on purpose to compensate before I had it just right after the rings were torqued down. |
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Posted: 4/4/2023 4:44:15 PM EDT
[#20]
LaRue
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Posted: 4/9/2023 12:53:26 AM EDT
[#21]
Quote HistoryI like my Scalarworks also |
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Posted: 4/11/2023 1:05:27 AM EDT
[#22]
I appreciate all the replies so far...
First thing.... I've plenty of room on the receiver and between the adjustment turrets and objective start/magnification adjustment... I can get that scope where I need it to accommodate eye relief, charging handle clearance, all whilst staying on the receiver pic rail. I'm going to go with the Warne 217LM It's an ultra high QD ring 30mm Where will this put the scope on plane? The specs within the specs. The battle sights on there now are a perfect height for me. The specs on those are 1.5" high deployed. Am even more important spec on the battle sight is from the center of peep sight to the top of the rail measures 1.42" The Warne 217LM is a 30mm ring.. Top of rail to bottom of the Ring opening is .850 The radius of the ring opening (30mm) is .59055 The very center of the Warne ring from the top of the rail is 1.44055 In other words nearly spot on from center of ring vs. Center of peep on the battle sight. Twenty thousands difference is negligible. I will mount this tomorrow afternoon and report back. Thx |
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Posted: 4/26/2023 11:06:23 PM EDT
[#23]
Only ring id do is ring up the retailer and ask to return. Those things have been junk so far, which blows cuz i want on so badly.
On a more serious note.. larue is my go to |
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Posted: 5/11/2023 11:14:34 PM EDT
[#24]
Quote HistoryQuoted: I appreciate all the replies so far... First thing.... I've plenty of room on the receiver and between the adjustment turrets and objective start/magnification adjustment... I can get that scope where I need it to accommodate eye relief, charging handle clearance, all whilst staying on the receiver pic rail. I'm going to go with the Warne 217LM It's an ultra high QD ring 30mm Where will this put the scope on plane? The specs within the specs. The battle sights on there now are a perfect height for me. The specs on those are 1.5" high deployed. Am even more important spec on the battle sight is from the center of peep sight to the top of the rail measures 1.42" The Warne 217LM is a 30mm ring.. Top of rail to bottom of the Ring opening is .850 The radius of the ring opening (30mm) is .59055 The very center of the Warne ring from the top of the rail is 1.44055 In other words nearly spot on from center of ring vs. Center of peep on the battle sight. Twenty thousands difference is negligible. I will mount this tomorrow afternoon and report back. Thx Height wise you should be fine, generally a 1.5”, 1.7” or 1.93” centerline heights are preferred on AR platforms, depending on the set up and personal preference. As others have mentioned you may not be able to get proper eye relief with those rings, a cantilevered forward mount is commonly used on ARs to push forward enough. Especially since the SFAR receiver is shorter than most other .308 size uppers (you don’t want to bridge the gap and put a ring out on the forend). |
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