Super light-weight alternatives to the Magpul PRS Gen 3 Rear Stock
- Thread starter AZgeek
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Luth-AR, seekins, magpul ctr with a cheek riser...that's all i can think of off the top of my head.
I have 5 PRS Gen2 and Gen3 on all my precision AR's. I bought the Luth and sold it at a loss the next day. It was flimsy and doesnt even compare to a PRS. Just my $0.02
I guess it has its place in the budget build arena but it doesnt replace or compare to a PRS imho.
I guess it has its place in the budget build arena but it doesnt replace or compare to a PRS imho.
I would highly recommend that you don’t buy one. I’ve had one for a year and still need to take it off my gun. While it is light and very easy to adjust, the thumb wheels that adjust LoP and comb height get loose very easily. I’ve been shooting and had the cheek piece fall down under my face and I always collapse the stick when I put in the safe, I’m worried it would collapse on its own otherwise. Other than the PRS, I really like the regular A2 with a homemade vet wrap, foam, and adhesive felt cheek riser. If you need extra LoP, as I and my brother do, you can get a spacer that goes between the receiver and stock that gives you some extra length. My brother has one and it works great.
Horse shit. If it bothered you that bad it would not have taken a year of thinking about replacing it. I have a Luth AR 3 and love it. I tighten the thumb wheels tight and it stays put. If yours is coming loose wrap some thread tape on the screws. It’s the lightest and most adjustable and comfortable stock I’ve ever used.
No need to be so harsh. I just graduated, for the last 4 years I was a double major college student and I was working. I didn’t have much time to shoot, and when I did I often shot my bolt gun. However I did use my AR for some coyote hunting and two multi day prairie dog shoots among other times, so I feel like I’ve got plenty of time behind it. I chose to spend the 200 or so it would take to replace the Luth stock on other things like 6.5 ammo. I’m glad your stock works well for you, just please understand some people have different experiences.
The Seekins Procomp 10x is just a tad of 19 oz but length of pull requires spacers. I can live with my Magpul Gen 2 but the 3 seems longer. Probably not worth the time or expense to swap these out. May just find a super light optic and mount for the Grendel and move the boat anchor T5xi to the 308' then call it a day.
Thanks for the help gents.
Thanks for the help gents.
I am currently running two of the PRS gen II and personally feel they are the best option for adjustability and balance. If cost or weight were of no concern then I would be using the WOA 6 way adjustable but they are 4 pounds and $425 but damn they are nice.
My other favorite is the Vltor E-Mod for a 16" barreled set up, also not really a light weight but just balances everything out and has good ergos for me being 6'2".
My other favorite is the Vltor E-Mod for a 16" barreled set up, also not really a light weight but just balances everything out and has good ergos for me being 6'2".
AB arms urban sniper stock is 9.6oz and Tacar MKII is 13.45oz (both manufacturer listed weights). The Tacar would be my recommendation as it's very sturdy considering it's weight... just not as quick or as easily adjustable as Magpul PRS stocks.
Being a fan of lightweight precision AR builds myself... I just offer words of caution to consider overall balance rather than pure weight savings. Grendel/308 barrels tend to be fairly heavy and a well balanced rifle handles better for me than a super lightweight that's too forward heavy.
Being a fan of lightweight precision AR builds myself... I just offer words of caution to consider overall balance rather than pure weight savings. Grendel/308 barrels tend to be fairly heavy and a well balanced rifle handles better for me than a super lightweight that's too forward heavy.
Never heard of either of these two products. The AB Arms looks like its tool-less. Price is right as well! Possible option for my Grendel as I just put a new 20" Proof Carbon barrel on it. Without the Poof barrel, I would not be considering changing out the stock for something lighter.
Thanks for pointing out these two options.
I'm going to be trying out the Strike Industries Viper fixed stock.
I believe it fits over a Mil Spec carbine buffer tube, it looks like it has slots that might be compatible with CTR combs like the Larue RISR and there is a neat accessory monopod that stows in the stock. It's inexpensive too.
The length of pull wouldn't be as easy to change as an adjustable carbine stock or a target style adjustable butt pad. On the other hand, from what I've seen, the locking mechanism seems like it would rattle less than a MOE FCS.
If the RISR fits, it should be easy to mount your optics a bit high and then pad the RISR for the cheek weld you want. Not really adjustable but you can tailor it to fit you.
It might be a nice option, I'll give my opinion when I get it in a few days (minus the backordered monopod).
I believe it fits over a Mil Spec carbine buffer tube, it looks like it has slots that might be compatible with CTR combs like the Larue RISR and there is a neat accessory monopod that stows in the stock. It's inexpensive too.
The length of pull wouldn't be as easy to change as an adjustable carbine stock or a target style adjustable butt pad. On the other hand, from what I've seen, the locking mechanism seems like it would rattle less than a MOE FCS.
If the RISR fits, it should be easy to mount your optics a bit high and then pad the RISR for the cheek weld you want. Not really adjustable but you can tailor it to fit you.
It might be a nice option, I'll give my opinion when I get it in a few days (minus the backordered monopod).
I found the ctr stock to be too low, and the RISR to be too high for a good cheek weld. Neither are adjustable. I also found that the RISR pulled beard hair out of my face. That was enough of a deal breaker even if the cheek weld was good. The prs is heavy and expensive, but the adjustments are great, stay put, and are easily changed for different shooters. There is a reason it is the precision stock by which others are judged. The Luth-AR stock looks good, is priced right, and is light weight. But, the adjustments look like s pain if you are switching between shooters.
The Luth-Ar definitely is not in the same league as a PRS as far as quality and strength/stability. However, I have both and like both. It just depends what is more important to you. I have never personally had problems with my Luth-Ar, but I can see how one might, based on how the adjustments work. When it comes to saving weight with anything, not just stocks, you are probably going to have to make some compromises. You just have to decide if it's worth it to you and what you want to do with the gun.
You might consider some of the Fab Defense stuff:
https://www.fab-defense.com/en/category-buttstocks.html
Some of it looks like alien ware, but I tried the SR-25 stock to replace my PRS and the build quality is quite good.
I got my Strike Industries Viper fixed stock today.
Compared to the Magpul, it's a heavyweight. The plastic seems thicker, all the pieces are snug fits on the buffer tube and the way it clamps on the buffer tube draws the whole assembly together tight.
It is super solid, no rattle.
I tried to shim everything with blue tape to tighten up my Magpul MOE FCS but it was still a bit lose. Not too bad but noticeable.
I'm using this stock with a Law Tactical folding stock adapter on an LR308 type rifle so I need short LOP because everything else adds. Unfortunately it does not seem like it was designed for AR10 length carbine buffer tubes or Vltor A5 setups, it needs one of it's extension pieces to fit.
I think I might get a PSA PA10 7 position carbine buffer tube ($20) and Chuck it up in a lathe to turn about the last 1/2" round. That should allow the stock to tighten up without a spacer piece at minimum LOP on the modified AR10/A5 length buffer tube.
I tried to see if the RISR fits. No luck, it doesn't have the track for the nut bars to ride in and the slots aren't the right spacing either. It might be possible to cut out the tracks and make it fit but that's a lot of work.
Any way, super solid, inexpensive and an inexpensive monopod setup that I'll review later but not as light or RISR compatible as I was hoping for.
If you don't need adjustable I think it will make a pretty useful "precision" stock at a good price.
Compared to the Magpul, it's a heavyweight. The plastic seems thicker, all the pieces are snug fits on the buffer tube and the way it clamps on the buffer tube draws the whole assembly together tight.
It is super solid, no rattle.
I tried to shim everything with blue tape to tighten up my Magpul MOE FCS but it was still a bit lose. Not too bad but noticeable.
I'm using this stock with a Law Tactical folding stock adapter on an LR308 type rifle so I need short LOP because everything else adds. Unfortunately it does not seem like it was designed for AR10 length carbine buffer tubes or Vltor A5 setups, it needs one of it's extension pieces to fit.
I think I might get a PSA PA10 7 position carbine buffer tube ($20) and Chuck it up in a lathe to turn about the last 1/2" round. That should allow the stock to tighten up without a spacer piece at minimum LOP on the modified AR10/A5 length buffer tube.
I tried to see if the RISR fits. No luck, it doesn't have the track for the nut bars to ride in and the slots aren't the right spacing either. It might be possible to cut out the tracks and make it fit but that's a lot of work.
Any way, super solid, inexpensive and an inexpensive monopod setup that I'll review later but not as light or RISR compatible as I was hoping for.
If you don't need adjustable I think it will make a pretty useful "precision" stock at a good price.
Deja Vu for me. I think I had a Luth mounted for less than a day and took a $30-50 loss.
Not that it’s a bad product, but it feels like a toy compared to the PRS.
I concur on the feeling of the luths feeling cheap. They feel like if the rifle was dropped the stock might not survive. If I was trying to save weight I’d probably opt for Seekins. Personally like the Gen 3 PRS a lot tho
I might have had the first MBA3 off the line. They had all the parts. Just didnt assemble them yet. I emailed Luth. Spoke to his wife. And convinced her to sell me a 2 tone one. Instead of buying a black complete stock and buying fde parts for it.
I had picked up a Vltor adapter for my Scar17 and unfortunately it is carbine and not rifle. So my PRS would not fit.
That MBA3 while looks cool. And seems to have all the adjustment. Just is cheap feeling. Like hard brittle plastic. Very light. But i didnt like how the antivibration set screw would loosen up from recoil. Just cannot compare to how solid the PRS is.
Not even in the same league.
I had picked up a Vltor adapter for my Scar17 and unfortunately it is carbine and not rifle. So my PRS would not fit.
That MBA3 while looks cool. And seems to have all the adjustment. Just is cheap feeling. Like hard brittle plastic. Very light. But i didnt like how the antivibration set screw would loosen up from recoil. Just cannot compare to how solid the PRS is.
Not even in the same league.
That new Seekins Procomp 10x might be worth a look. Going to revisit the Magpul CTR but with the LaRue Tactical RISR™ (Reciprocating Inline Stock Riser). Should be delivered today. They were on sale for $19 so figured it was worth a try at that price. I do not like the Magpul Gen 3 PRS as the LOP is too long for my frame.
I just saw that Seekins on an email. Thats how i found this thread. I was looking up PRS weight after seeing the Seekins weight.
While it is lighter. For the similar cost. I rather find a Gen 1 or Gen 2 PRS. They are still around.
And i agree with the lop on the Gen 3.
I still have a new Gen 1 Sr25 PRS. Probably will end up using it. I havent found anything better
On a slightly different note, I was resurrecting an old project a tube gun. I had a couple PRS so decided to buy the latest version to complete this build. I already had a rifle buffer tube installed so when the latest PRS arrived I slid it on. Much to my surprise, the length of pull was way too long. After much looking I opted for the Luth-AR because it offered the most adjustability for the money. When it arrived I slid it on and my length of pull issue was resolved. I'm sure I can find a home for the latest generation PRS.
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I know this is an old post, but if you are still looking, I thought I would contribute. What will be your application? That should factor in heavily for the stock you select.
I’m in the research stage for a new lower that will be for longish range with probably a 20” WOA barrel. I also want an adjustable stock, but also something that can ride a bag (sock filled with popcorn). This really limits a lot what is out there. Sorry, weight is not one of my requirements. Price is a factor for me to a certain extent.
Being that I am still in the research stage, I have not used the below stocks, but at the same time, I am not trying to defend a purchase or justify what I like. Take it for what it is. It isn’t based on hands-on experience with the products.
As of now I am leaning to either the PRS or TACMOD. I know you are trying get something light than the PRS. The TACMOD is 29.2 oz. This is a little lighter than what you have, but not sure if it is light enough.
These are others I have looked at and probably have ruled out:
Luth-ar - lots of complaints about being flimsy. I want something solid.
WOA - out of my price range and doesn’t ride a bag
XLR-AR - complaints about the cheek piece being flimsy and interfering with the charging handle
I’m not sure if the complaints listed above are factual, but they do play a part in the eventual selection if another doesn’t have complaints. I would hate to make a purchase and find out the complaints were legitimate.
Reading this I may have to look at the AB Arms and the TAC AR.
Hope this helps you or someone else some.
I’m in the research stage for a new lower that will be for longish range with probably a 20” WOA barrel. I also want an adjustable stock, but also something that can ride a bag (sock filled with popcorn). This really limits a lot what is out there. Sorry, weight is not one of my requirements. Price is a factor for me to a certain extent.
Being that I am still in the research stage, I have not used the below stocks, but at the same time, I am not trying to defend a purchase or justify what I like. Take it for what it is. It isn’t based on hands-on experience with the products.
As of now I am leaning to either the PRS or TACMOD. I know you are trying get something light than the PRS. The TACMOD is 29.2 oz. This is a little lighter than what you have, but not sure if it is light enough.
These are others I have looked at and probably have ruled out:
Luth-ar - lots of complaints about being flimsy. I want something solid.
WOA - out of my price range and doesn’t ride a bag
XLR-AR - complaints about the cheek piece being flimsy and interfering with the charging handle
I’m not sure if the complaints listed above are factual, but they do play a part in the eventual selection if another doesn’t have complaints. I would hate to make a purchase and find out the complaints were legitimate.
Reading this I may have to look at the AB Arms and the TAC AR.
Hope this helps you or someone else some.
Thread may be old but still relevant.
Been needing a stock to ride bags.
Currently budget is a concern.
Luth-ar seems to meet my needs.
Does anybody know if they tighten up to get rid of wable?
The one on display was loose to show function I guess.
Been needing a stock to ride bags.
Currently budget is a concern.
Luth-ar seems to meet my needs.
Does anybody know if they tighten up to get rid of wable?
The one on display was loose to show function I guess.
I also bought just the Luth skeleton and put it on my open sight AR10. Did not notice any wobble at all. I'll beat on it a little bit tonight and double check that for you. The Seekins went on my AR15 Grendel.
I reread Luth-ar description and reviews.
Apears the screw upper and forward I saw is on fact to tighten the rattle out.
This will be for my 6.5g and 223 ammo testing lower.
No matter what I do I get more movement than I want sliding down bag. Mitigated all I can it's still not acceptable for shooting groups.
I understand they aren't bolt guns but I know I can get better groups without that extra flip from a magpull crt sliding.
Apears the screw upper and forward I saw is on fact to tighten the rattle out.
This will be for my 6.5g and 223 ammo testing lower.
No matter what I do I get more movement than I want sliding down bag. Mitigated all I can it's still not acceptable for shooting groups.
I understand they aren't bolt guns but I know I can get better groups without that extra flip from a magpull crt sliding.
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