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Lightweight Parts List with WEIGHTS (AR-15) (Page 127 of 129)
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Originally Posted By djkest: Optics Planet has a good deal on these right now: https://www.opticsplanet.com/aero-precision-ar15-assembled-upper-receiver-no-forward-assist.html?_iv_code=29D-UPR-AR15AURNFA-APAR610401AC That’s where I bought it from. I don’t know if I’ll actually receive it. Who knows. Any good options for a hand guard? |
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Originally Posted By fadedsun: That’s where I bought it from. I don’t know if I’ll actually receive it. Who knows. Any good options for a hand guard? The Fostec rails are the lightest right now, especially the 10" "tungsten" one which tends to be a bit longer. I'd love to get my hands on one and take pictures of / weigh the nut. The list on page 1 is pretty up-to-date. Midwest Industries Ultra Lightweight $$ V7 Systems Hyperlite $$$ Aero Precision Atlas-One M-Lok |
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Originally Posted By djkest: The Fostec rails are the lightest right now, especially the 10" "tungsten" one which tends to be a bit longer. I'd love to get my hands on one and take pictures of / weigh the nut. The list on page 1 is pretty up-to-date. Midwest Industries Ultra Lightweight $$ V7 Systems Hyperlite $$$ Aero Precision Atlas-One M-Lok I'm running the 12.6" MI rail on the 14.5" pin & weld build I recently finished. No complaints. Thinking about trying the Odin Works O2 lite rail on the next build, but now that I see the Fostec handguard, I might have to go that route |
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Originally Posted By djkest: The Fostec rails are the lightest right now, especially the 10" "tungsten" one which tends to be a bit longer. I'd love to get my hands on one and take pictures of / weigh the nut. The list on page 1 is pretty up-to-date. Midwest Industries Ultra Lightweight $$ V7 Systems Hyperlite $$$ Aero Precision Atlas-One M-Lok Something else to add to the list: Samson low profile gas block-.61 oz That's a MFG supplied number but when mine arrives I'll get you a user supplied number with a photo to back it up. It's the Lightest one I have seen so far and about a tenth of an ounce lighter than the V7. https://www.mountsplus.com/625-low-profile-gas-block-samson-lightweight-ar15-gas-block.html The Aero atlas one seems to be the best combination of price, length, and weight. about 13 ounces for the complete setup. I'll go with that. What is the measurement used for weighing a rifle? Ready to shoot with optics, BUIS? no optic/BUIS? |
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Originally Posted By fadedsun: Something else to add to the list: Samson low profile gas block-.61 oz That's a MFG supplied number but when mine arrives I'll get you a user supplied number with a photo to back it up. It's the Lightest one I have seen so far and about a tenth of an ounce lighter than the V7. https://www.mountsplus.com/625-low-profile-gas-block-samson-lightweight-ar15-gas-block.html The Aero atlas one seems to be the best combination of price, length, and weight. about 13 ounces for the complete setup. I'll go with that. What is the measurement used for weighing a rifle? Ready to shoot with optics, BUIS? no optic/BUIS? The Under 6 thread has specific requirements in the OP. |
Death to quislings.
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Anderson LW receiver set: 14.4 OZ for upper and lower set. Attached File |
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Originally Posted By fadedsun: That's where I bought it from. I don't know if I'll actually receive it. Who knows. Any good options for a hand guard? I've bought from Optics Planet lately without an issue. But I make sure it's clear on their website its in stock. Also, free shipping is sloowww. |
Tom Sawyer.
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Originally Posted By tortilla-flats: I've bought from Optics Planet lately without an issue. But I make sure it's clear on their website its in stock. Also, free shipping is sloowww. I ordered my stuff on the 1st and it still hasn't arrived. Yeah, super slow. |
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Attached File Attached File .6 oz Attached File 18 grams |
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That part is so light that your scale lacks the precision to measure it properly. Still, that's good news. I'd love to get my hands on the KAK mini-milspec and the LWRC UCIW buffer tubes to see how much they weigh. Might be a good option for some folks, only issue is that they have proprietary buffer systems to deal with the shorter length. |
Proud millennial.
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Originally Posted By djkest: That part is so light that your scale lacks the precision to measure it properly. Still, that's good news. I'd love to get my hands on the KAK mini-milspec and the LWRC UCIW buffer tubes to see how much they weigh. Might be a good option for some folks, only issue is that they have proprietary buffer systems to deal with the shorter length. Originally Posted By djkest: That part is so light that your scale lacks the precision to measure it properly. Still, that's good news. I'd love to get my hands on the KAK mini-milspec and the LWRC UCIW buffer tubes to see how much they weigh. Might be a good option for some folks, only issue is that they have proprietary buffer systems to deal with the shorter length. Lose more weight taking the weights out of the buffer itself & turning down the gas. One of the least expensive routes to lose weight on an AR, albeit & the expense of some reliability, some of which can be mitigated by turning the gas back up as needed. |
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Originally Posted By djkest: Looks like Aero Precision may be discontinuing their "No-FA" upper receivers, which sucks because they were one of the few companies that still made them. I just picked up one from Primary Arms while they are still around. Ouch. Those uppers are nice. Source? |
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Originally Posted By fadedsun: Ouch. Those uppers are nice. Source? https://www.aeroprecisionusa.com/ar15-assembled-upper-receiver-no-fa Marked as discontinued. |
Proud millennial.
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Originally Posted By djkest: That part is so light that your scale lacks the precision to measure it properly. Still, that's good news. I'd love to get my hands on the KAK mini-milspec and the LWRC UCIW buffer tubes to see how much they weigh. Might be a good option for some folks, only issue is that they have proprietary buffer systems to deal with the shorter length. Originally Posted By djkest: That part is so light that your scale lacks the precision to measure it properly. Still, that's good news. I'd love to get my hands on the KAK mini-milspec and the LWRC UCIW buffer tubes to see how much they weigh. Might be a good option for some folks, only issue is that they have proprietary buffer systems to deal with the shorter length. It's easy to test. Weigh a nickel, should be 5 grams, add another nickel, 10 grams... |
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Originally Posted By djkest: That part is so light that your scale lacks the precision to measure it properly. Still, that's good news. I'd love to get my hands on the KAK mini-milspec and the LWRC UCIW buffer tubes to see how much they weigh. Might be a good option for some folks, only issue is that they have proprietary buffer systems to deal with the shorter length. I recently emailed KAK and they said their KAK Mini Mil Spec Buffer Tube Kit with carbine buffer weighs 8.3 oz. And IIRC, I read somewhere that the LWRC UICW buffer tube kit (w/o stock) weighs 9.1 oz. |
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Originally Posted By C_1: I recently emailed KAK and they said their KAK Mini Mil Spec Buffer Tube Kit with carbine buffer weighs 8.3 oz. And IIRC, I read somewhere that the LWRC UICW buffer tube kit (w/o stock) weighs 9.1 oz. That sounds pretty good. Buffer Tube Buffer Castle Nut End Plate Buffer Spring I recently received another Aero Precision No FA upper and it was 0.1 oz less than my last one. 6.4 oz. I suspect the cerakote versions are slightly heavier due to coating thickness. |
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Good news on the KAK Mini-Milspec. MILSPEC Carbine system: Buffer: 3.0 Oz Spring: 1.9 Oz Buffer Tube: 3.9 Oz System weight: 8.8 Oz KAK Mini-Milspec: Buffer: 2.5 Spring: 1.4 Buffer Tube: 3.1 Oz System Weight: 7 Oz SO you can save 1.8 Oz for $60 by switching over to the KAK mini-milspec. The only big disadvantage is that you have less LOP, but that might not even be an issue for you. Parts seem to be good quality, maybe not "super premium" but still good milspec quality. |
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Originally Posted By C_1: I recently emailed KAK and they said their KAK Mini Mil Spec Buffer Tube Kit with carbine buffer weighs 8.3 oz. And IIRC, I read somewhere that the LWRC UICW buffer tube kit (w/o stock) weighs 9.1 oz. The LWRC buffer has tungsten weights in the buffer and weighs between the standard and H1 buffer. You could swap in steel weights if you want to cut some weight off the LWRC 2 weight buffer. The KAK is 1 weight buffer and gets length from the endcap. Personally, I prefer some rear weight to balance a rifle vs all out lightweight. It just handles better. And isn't the point of building an ultralight rifle supposed to be about handling? |
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Originally Posted By C_1: I recently emailed KAK and they said their KAK Mini Mil Spec Buffer Tube Kit with carbine buffer weighs 8.3 oz. And IIRC, I read somewhere that the LWRC UICW buffer tube kit (w/o stock) weighs 9.1 oz. But that includes castle nut and end plate I believe. |
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Originally Posted By DevL: The LWRC buffer has tungsten weights in the buffer and weighs between the standard and H1 buffer. You could swap in steel weights if you want to cut some weight off the LWRC 2 weight buffer. The KAK is 1 weight buffer and gets length from the endcap. Personally, I prefer some rear weight to balance a rifle vs all out lightweight. It just handles better. And isn't the point of building an ultralight rifle supposed to be about handling? Originally Posted By DevL: Originally Posted By C_1: I recently emailed KAK and they said their KAK Mini Mil Spec Buffer Tube Kit with carbine buffer weighs 8.3 oz. And IIRC, I read somewhere that the LWRC UICW buffer tube kit (w/o stock) weighs 9.1 oz. The LWRC buffer has tungsten weights in the buffer and weighs between the standard and H1 buffer. You could swap in steel weights if you want to cut some weight off the LWRC 2 weight buffer. The KAK is 1 weight buffer and gets length from the endcap. Personally, I prefer some rear weight to balance a rifle vs all out lightweight. It just handles better. And isn't the point of building an ultralight rifle supposed to be about handling? You're thinking of "a balanced rifle". Balanced rifles are about handling. Ultra-lightweight rifles are extremely handy to carry around, sometimes at the sacrifice of handling & other qualities. Everything is a compromise - pick yours. |
Death to quislings.
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Does anyone have a list of Lower reciever weights ? I'm building a lightweight Takedown AR. I'm thinking of using a H&R XM16E1 or a 601 Lower reciever. Attached File |
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Originally Posted By J_taylor: Does anyone have a list of Lower reciever weights ? I'm building a lightweight Takedown AR. I'm thinking of using a H&R XM16E1 or a 601 Lower reciever. https://www.ar15.com/media/mediaFiles/548798/1000011620_jpg-3192932.JPG There's quite a few on the first page and in the spreadsheet. |
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Originally Posted By RangeToy: I'm running the 12.6" MI rail on the 14.5" pin & weld build I recently finished. No complaints. Thinking about trying the Odin Works O2 lite rail on the next build, but now that I see the Fostec handguard, I might have to go that route That's actually a great size combo. |
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Well look at this. I've been sorting through some stuff and decided to check out some things... Lower: H&R M16A1 factory complete: 1lb, 13.75oz Upper: Colt 6720* complete: 3lbs, 6.50oz TOTAL: 5lbs, 4.25oz Not a bad start for just slapping together an upper & lower I had laying around. (no sights/optics) * Upper config... -- Colt M4 upper receiver w/Colt FA BCG & CH -- Colt 6720 16" pencil barrel w/A1 FH; ADCO shaved the FSB -- MI 10.5" Ultralightweight rail |
Tom Sawyer.
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Well I finally have the first lightweight part I thoroughly dislike. V Seven titanium takedown pins First off, they are very shiny/glossy. And while I appreciate the tight fit, I can't pull the takedown pin due to how slick the sides are. The Pivot pin is fine. This is one example of how saving a gram or two unfortunately is not worth the tradeoffs. This can't be any sort of "SHTF" type weapon if I can't even pull the takedown pin without a tool. Maybe I could try gently sanding down the pin and the sides of the "button" as well. |
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Originally Posted By djkest: Well I finally have the first lightweight part I thoroughly dislike. V Seven titanium takedown pins First off, they are very shiny/glossy. And while I appreciate the tight fit, I can't pull the takedown pin due to how slick the sides are. The Pivot pin is fine. This is one example of how saving a gram or two unfortunately is not worth the tradeoffs. This can't be any sort of "SHTF" type weapon if I can't even pull the takedown pin without a tool. Maybe I could try gently sanding down the pin and the sides of the "button" as well. Uh - have you tried pushing it from the other side with a bullet? Do we have the weights of the GWACS aluminum takedown pins w/ the integral ball bearing retainers? |
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Originally Posted By backbencher: Uh - have you tried pushing it from the other side with a bullet? Do we have the weights of the GWACS aluminum takedown pins w/ the integral ball bearing retainers? I believe those only fit CAV-15 lowers since they are thicker. |
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Originally Posted By djkest: I believe those only fit CAV-15 lowers since they are thicker. Originally Posted By djkest: Originally Posted By backbencher: Uh - have you tried pushing it from the other side with a bullet? Do we have the weights of the GWACS aluminum takedown pins w/ the integral ball bearing retainers? I believe those only fit CAV-15 lowers since they are thicker. Nope, they work fine. Stick out a little bit. |
Death to quislings.
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Here's a rabbit hole of lightweight furniture. https://www.smokecomposites.com/ |
Tom Sawyer.
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Originally Posted By tortilla-flats: Here's a rabbit hole of lightweight furniture. https://www.smokecomposites.com/ I've used a good bit of SC's products, and have written a few reviews on ammoland.com. Short version, it's good stuff. |
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Originally Posted By Slimjim: https://www.ar15.com/media/mediaFiles/49519/andersonlw_jpg-3215961.JPG Got the anderson set Cerakoted today. |
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Originally Posted By djkest: https://www.aeroprecisionusa.com/ar15-assembled-upper-receiver-no-fa Marked as discontinued. Originally Posted By djkest: Originally Posted By fadedsun: Ouch. Those uppers are nice. Source? Marked as discontinued. |
Tom Sawyer.
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Originally Posted By djkest: Good news on the KAK Mini-Milspec. MILSPEC Carbine system: Buffer: 3.0 Oz Spring: 1.9 Oz Buffer Tube: 3.9 Oz System weight: 8.8 Oz KAK Mini-Milspec: Buffer: 2.5 Spring: 1.4 Buffer Tube: 3.1 Oz System Weight: 7 Oz SO you can save 1.8 Oz for $60 by switching over to the KAK mini-milspec. The only big disadvantage is that you have less LOP, but that might not even be an issue for you. Parts seem to be good quality, maybe not "super premium" but still good milspec quality. I came across this Mini-Milspec setup researching an N-23 build. |
Tom Sawyer.
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Unbranded AR advertises a carbon fiber lower at 3.7oz. Never heard of them before. https://www.unbrandedar.com/product/uar-carbon-fiber-ar-15-lower-receiver/ |
Tom Sawyer.
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Originally Posted By tortilla-flats: Unbranded AR advertises a carbon fiber lower at 3.7oz. Never heard of them before. https://www.unbrandedar.com/product/uar-carbon-fiber-ar-15-lower-receiver/  It's just another polymer lower but they're using carbon fibers instead of nylon to get the weight down. Problem is that unless it's a .22 LR, you'll be wanting a thumbhole stock to reinforce the buffer tube boss, and then it's not so light. |
Death to quislings.
| I've not seen that but I do have a Javelin Lite bipod that I'm impressed with. It doesn't fold either, but the bipod is attached to the mount with a magnet so attaching/detaching is simple and solid. 4.8oz without mount. |
Tom Sawyer.
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Lightweight Parts List with WEIGHTS (AR-15) (Page 127 of 129)
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