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Posted: 5/23/2015 1:26:17 AM EDT
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I do apologize for the newbie questions, but I don't think that I've done anything on a AR 10 platform since my TBI in 2010. I just got a DPMS LR308HP in a trade. It has a heavy 16 inch barrel that I have traded out for a 18 inch Losok barrel. I am trying to figure out what FF handrail that I want to put on it. I really like DD 7.62 Lite rail but they quit making the 12 inchers. I have been looking at the 9 inchers at Western sport. Any drawbacks (besides the gas block being exposed and shorter sight radius) to having a 9 inch rail on a mid-length? I am also struggling with the stupid buffer. It has a commercial stock on it and I am wanting to change it to a mil-spec. I know that I am supposed to know what buffer I need but my stroke in 2010 has me confused. The DPMS tube is longer than the "new" milspec tube and the DPMS buffer is shorter and only weighs 3.3 oz. I would rather go with the mil-spec but was sort of shocked by the lighter buffer. What do I need to do to switch it out? Last question, what would be a fair price to sell the 16 inch heavy barrel for? It is new and has not been shot. Thanks for you time, Amos1909 |
| Pull the barrel and put it on ebay and start it at 150.00 and see where it goes..........My advice to you is if you are switching receiver extensions/buffer tubes.......buy an assembly that comes with the correct spring and buffer.........this way you can eliminate some of the guess work of knowing what works and what does not.........other wise you have to do some research to determine what will work and what will not........... |
| The 308 carbine receiver extension tubes are longer than the ar15 version. PSA makes one that's milspec. The 3.3oz carbine buffer should work well, I've used it but have since switched to an ar15 rifle length tube with a DPMS lr308 rifle buffer and spring. With the carbine setup shells extracted at two o'clock and now they exit at four o'clock with slightly less felt recoil. |
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The 308 carbine receiver extension tubes are longer than the ar15 version. PSA makes one that's milspec. The 3.3oz carbine buffer should work well, I've used it but have since switched to an ar15 rifle length tube with a DPMS lr308 rifle buffer and spring. With the carbine setup shells extracted at two o'clock and now they exit at four o'clock with slightly less felt recoil. I just ordered the pa-10 receiver extension for my Bushmaster orc 308 (basically a 16" mid DPMS). This plus an AR15 h3 buffer will replace the commercial tube and short buffer. I am also using a tubb's flatwire spring. |
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The 308 carbine receiver extension tubes are longer than the ar15 version. PSA makes one that's milspec. The 3.3oz carbine buffer should work well, I've used it but have since switched to an ar15 rifle length tube with a DPMS lr308 rifle buffer and spring. With the carbine setup shells extracted at two o'clock and now they exit at four o'clock with slightly less felt recoil. You guys are confusing the $hit out of me, I can only guess what your doing to poor old Amos1909! There are two main buffer systems for .308 AR's: AR-10 pattern and LR308 pattern. The LR308 pattern uses the following parts: -AR-15 carbine receiver extension -LR308 carbine action spring -LR308 short buffer The AR-10 pattern uses these parts: -AR-10 carbine receiver extension (same length as VLTOR A5) -AR-10 action spring (rifle and carbine use the same spring) -AR-15 H3 carbine buffer Amos1909, what do you mean it's got a "commercial stock" on it? Are you changing out an A2 RIFLE stock for a carbine stock with a mil-spec (AR15) receiver extension? if so, it sounds like you have the correct parts, a "short 308 buffer" and a "DPMS" 308 carbine spring. |
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Quoted: You guys are confusing the ---- out of me, I can only guess what your doing to poor old Amos1909! There are two main buffer systems for .308 AR's: AR-10 pattern and LR308 pattern. The LR308 pattern uses the following parts: -AR-15 carbine receiver extension -LR308 carbine action spring -LR308 short buffer The AR-10 pattern uses these parts: -AR-10 carbine receiver extension (same length as VLTOR A5) -AR-10 action spring (rifle and carbine use the same spring) -AR-15 H3 carbine buffer Amos1909, what do you mean it's got a "commercial stock" on it? Are you changing out an A2 RIFLE stock for a carbine stock with a mil-spec (AR15) receiver extension? if so, it sounds like you have the correct parts, a "short 308 buffer" and a "DPMS" 308 carbine spring. Quoted: Quoted: The 308 carbine receiver extension tubes are longer than the ar15 version. PSA makes one that's milspec. The 3.3oz carbine buffer should work well, I've used it but have since switched to an ar15 rifle length tube with a DPMS lr308 rifle buffer and spring. With the carbine setup shells extracted at two o'clock and now they exit at four o'clock with slightly less felt recoil. You guys are confusing the ---- out of me, I can only guess what your doing to poor old Amos1909! There are two main buffer systems for .308 AR's: AR-10 pattern and LR308 pattern. The LR308 pattern uses the following parts: -AR-15 carbine receiver extension -LR308 carbine action spring -LR308 short buffer The AR-10 pattern uses these parts: -AR-10 carbine receiver extension (same length as VLTOR A5) -AR-10 action spring (rifle and carbine use the same spring) -AR-15 H3 carbine buffer Amos1909, what do you mean it's got a "commercial stock" on it? Are you changing out an A2 RIFLE stock for a carbine stock with a mil-spec (AR15) receiver extension? if so, it sounds like you have the correct parts, a "short 308 buffer" and a "DPMS" 308 carbine spring. All the M4 configured ARs that I own are Mil-spec stocks and I would like to keep it that way. So I am wanting to change it out. I am a bit confused but thought it was just my TBI working up!  |
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So the the DPMS 3.3 oz buffer and Spring would work in a regular Mil-spec M4 buffer tube? I do have one in hand, so I would not have order that. I changed one out in my other AP4 6-7 years ago (time sure does fly) and I was certain (but my TBI is arguing with me ) I used the 3.3 oz buffer and spring in a mil-spec M4 tube and then put a Magpul STR on it. I like the balance and feel of that rifle but it has a 16 in barrel on it.Thanks again fellows for all the info. |
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Does the front sight not bother you when looking through the scope? Thanks for the pic |
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Does the front sight not bother you when looking through the scope? Thanks for the pic Quoted:
Thanks for the pic Yw, nope, you can place the sight right in front of a scope as low as 4x and it won't pick it up at all. I haven't measured on how far away it has to be but it's at least 2 feet or more. |
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Quoted: Yw, nope, you can place the sight right in front of a scope as low as 4x and it won't pick it up at all. I haven't measured on how far away it has to be but it's at least 2 feet or more. Quoted: Quoted: Thanks for the pic Yw, nope, you can place the sight right in front of a scope as low as 4x and it won't pick it up at all. I haven't measured on how far away it has to be but it's at least 2 feet or more. |
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I get a blurring of images when I try to mount a scope like that but I do have terrible astigmatism. Quoted:
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Thanks for the pic Yw, nope, you can place the sight right in front of a scope as low as 4x and it won't pick it up at all. I haven't measured on how far away it has to be but it's at least 2 feet or more. :) i set the eye-piece cross-hairs into focus at highest mag facing a wall (light background) just 3-4 feet away. Then when at the range I adjust the objective lens so that the target is as clear as possible (having a target with legible text or a picture in a corner of it really helps.) Then just line up the sight on the target and enjoy! 
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