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Posted: 9/22/2021 9:47:58 PM EDT
[#1]
Quote HistoryOriginally Posted By yrs: Finally, my ULW build is almost done. It sits at 4 Lb 3.5 oz right now, without sights and mags. My goal was to be under 4.5 Lb without sights. So, I'm pretty happy with the result. In comparison, my SHTF rifle is about 6.5Lb with just iron sights. I could've definitely gone below 4 Lb if I wanted to chase every single gram. But right now, I really like how it looks and feels in my hands. Still undecided on the sights/optics. Probably will put on a simple red dot first to test the rifle out. If it proves reliable, then upgrade to a more sophisticated setup. https://i.imgur.com/cru9QZdl.jpg https://i.imgur.com/Y6KISEfl.jpg Very nice build 
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Posted: 9/22/2021 11:06:02 PM EDT
[Last Edit: brachiosaur]
[#2]
I keep on posting this picture.
 Complete PSA upper, 16" pencil barrel, 13" handguard, Toolcraft BCG- about $320 shipped a few years ago Stripped KP15- maybe 120 with tax Lower parts from another PSA kit- maybe 40 bucks worth? Aero mount- 85 shipped Leupold 2.5x20- 150ish off here 5.8 pounds as pictured, 6.8 with a loaded 20 round pmag. I've added a Slade foregrip and a Polytac 18650 light in an Odin Works mount but haven't weighed it with those.  Attached File I have a 20" Faxon Gunner that I need to build up. I'm using a regular lower that currently has an A2 stock on it. I forgot how heavy those were so I'm looking for a lightweight rifle stock. I also want a no F/A upper and a lightweight 15" rail. I'll start with my Razor HD LH 2-10. I think I can keep this at 7 pounds with optic, maybe less.Edit- realized I had a picture of when I got the lower and hadn't assembled it yet! |
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Posted: 9/22/2021 11:15:12 PM EDT
[Last Edit: balane]
[#3]
Wish I could post a photo but scale says 6 Lbs. 0.2 Oz. (Without mag inserted.)
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Posted: 9/23/2021 6:09:38 AM EDT
[#4]
Well, I finally made it into this thread, barely.
5 lbs. 13 oz.  Attached FileKE Arms KP-15 monolithic polymer lower with a PTAC M4gery slickside upper and a lightweight BCG from our overlords. It actually shoots really well especially considering that I have less than $600 in it. |
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Posted: 9/23/2021 9:39:47 PM EDT
[Last Edit: swampfoxoutdoors]
[#5]
Sorry for the crummy photo. Buddy brought by his scale on the way home from work. Have had this build done for a while and happy with how it turned out for the amount I have in it.
This is with fully loaded 30rd p mag and Og turbo.  Attached File Attached FileWithout can and mag.  Attached FileNbs slick side upper Nbs rail Faxon pencil barrel Vortex crossfire |
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CO, USA
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Posted: 11/8/2021 3:26:26 PM EDT
[#6]
I would love to get my hands on one of those MOA rizers. Where did you get that from? Their website has been down for the past couple of weeks.
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WI, USA
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Posted: 11/9/2021 7:13:39 PM EDT
[Last Edit: j_cobbers]
[#7]
Originally Posted By vkeith: Well, I finally made it into this thread, barely. 5 lbs. 13 oz. https://www.ar15.com/media/mediaFiles/440308/IMG_20210810_145539748_jpg-2101549.JPG KE Arms KP-15 monolithic polymer lower with a PTAC M4gery slickside upper and a lightweight BCG from our overlords. It actually shoots really well especially considering that I have less than $600 in it. Nice build, like the use of the KE Arms lower but why is your rear BUIS so far forward? Elongate that sight radius! |
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Posted: 12/16/2021 5:07:06 PM EDT
[Last Edit: RobertL]
[#8]
This is my budget lightweight build. It’s primarily parts out of my spare parts pile with a lot of belt sander and drill press work, with the exception of a few small parts and the Faxon pencil barrel.
4lbs 14.8oz Bare   5lbs 6.2oz with mag, optic and mount.  The finish is alumacote. I’m hoping it flattens out a bit as it finishes curing. If not, I’m going to hit it with some 0000 steel wool. ETA the other side 
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OR, USA
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Posted: 12/18/2021 1:08:04 PM EDT
[Last Edit: SCCnGA]
[#9]
I finished my dream build yesterday and will post full details in the build thread. Overkill was the goal, obviously. No polymer or skeleton parts, no compromises on durability. It’s been a year long project.
10.5” 300AAC, 4.55 lb with fat left in it. This is with thread protector, no MD. Will be 100% suppressed when my Nomad Ti jailbreaks. I can drop another 3.5oz easily but want to see how this combo shoots first. As shown will come in a touch under 5.5lb with optic and suppressor. I am pleased.  |
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USA
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Posted: 12/18/2021 8:24:40 PM EDT
[#10]
A lot of these posts should be merged with the KISS thread.
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Posted: 12/19/2021 12:13:16 AM EDT
[#11]
Quote HistoryOriginally Posted By BeardedDude: A lot of these posts should be merged with the KISS thread. KISS, but make the smallest parts out of the most exotic materials possible for 3-5X the cost.
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Posted: 12/22/2021 2:50:16 AM EDT
[#12]
Quote HistoryOriginally Posted By SCCnGA: I finished my dream build yesterday and will post full details in the build thread. Overkill was the goal, obviously. No polymer or skeleton parts, no compromises on durability. It’s been a year long project. 10.5” 300AAC, 4.55 lb with fat left in it. This is with thread protector, no MD. Will be 100% suppressed when my Nomad Ti jailbreaks. I can drop another 3.5oz easily but want to see how this combo shoots first. As shown will come in a touch under 5.5lb with optic and suppressor. I am pleased. https://i.imgur.com/J9pLfp3.jpg Very nice. Would like to see a pic of the entire gun. |
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Posted: 12/22/2021 5:12:55 AM EDT
[#13]
Quote HistoryOriginally Posted By backbencher: KISS, but make the smallest parts out of the most exotic materials possible for 3-5X the cost. Quote HistoryOriginally Posted By backbencher: Originally Posted By BeardedDude: A lot of these posts should be merged with the KISS thread. KISS, but make the smallest parts out of the most exotic materials possible for 3-5X the cost. No sir, I went cheap with a wtf scope! Just bought another KP15 today... 
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TX, USA
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Posted: 1/18/2022 9:31:12 PM EDT
[#14]
I just received my 13" Fostech Mach-2 Lite rail. On my food scale it weighs 5.4 ounces with barrel nut and all installation hardware. I was truly surprised.
My Fighter lite receiver set weighs 10.2 total for the upper and lower. Pretty crazy total of 15.6 ounces |
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Posted: 1/23/2022 4:53:07 PM EDT
[#15]
I don’t think I ever posted this one. 4.39 lbs with scope. I love shooting this little gun.
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TX, USA
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Posted: 1/25/2022 7:01:58 AM EDT
[#16]
is that a smoke rail on the front? The cutouts seem different than mine.
Sweet looking machine there |
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Posted: 1/25/2022 7:36:19 AM EDT
[Last Edit: larrys]
[#17]
It’s made by Smoke for BAD. This version is a hair lighter if I recall correctly.
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AR, USA
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Posted: 1/25/2022 3:23:37 PM EDT
[#18]
@brachiosaur
How do you like that fixed Leupold? It's the 2.5x, FX-II, right? I'm REALLY considering it for a .308. Also, how's that suburban running? I just put a new LM7 into a 2000 with the barn doors. I love it. |
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Posted: 1/25/2022 4:23:08 PM EDT
[#19]
Yes it's the 2.5x FX-II, I really like it (the scope, not the Sub
)! Glass is nice and clear and I can shoot with both eyes open. I have the +2" Aero mount but the +1" would have been fine. I want to buy one or two more; one for a lever gun* and maybe one for the second KP15 I bought recently. I have another PSA 16" upper that I don't love; considering re-barreling it with a Faxon Gunner and sticking it on that KP15. With the same setup (flashlight and mount, 2.5x and mount, sling) it'll probably be close to 6.5 pounds so out of the running for this thread.* https://ashleyperformance.com/products/leveractionscopemount |
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Posted: 1/25/2022 7:37:23 PM EDT
[#20]
Quote HistoryOriginally Posted By j_cobbers: Nice build, like the use of the KE Arms lower but why is your rear BUIS so far forward? Elongate that sight radius! Quote HistoryOriginally Posted By j_cobbers: Originally Posted By vkeith: Well, I finally made it into this thread, barely. 5 lbs. 13 oz. https://www.ar15.com/media/mediaFiles/440308/IMG_20210810_145539748_jpg-2101549.JPG KE Arms KP-15 monolithic polymer lower with a PTAC M4gery slickside upper and a lightweight BCG from our overlords. It actually shoots really well especially considering that I have less than $600 in it. Nice build, like the use of the KE Arms lower but why is your rear BUIS so far forward? Elongate that sight radius! I don't like having anything even close to obstructing the charging handle. The extra inch or so doesn't seem to affect accuracy that much. |
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MI, USA
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Posted: 1/25/2022 8:56:14 PM EDT
[Last Edit: steve118]
[#21]
 With the irons it is 5 lbs 7.6 oz Add the scope, 6lbs 12.8 oz The can adds another 12oz or so |
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TX, USA
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Posted: 2/3/2022 2:57:17 PM EDT
[Last Edit: dejo]
[#22]
9mm AR-9
Fostech Fighter Lite upper/lower and Fostech Mach-2 lite rail 15.6ounces Smoke Composites Stock 5.4 ounces Form3d Grip 1.1 ounce Taccom ULW 16" barrel 15.1 ounces FM9 Bolt Carrier 14.4 ounces FM 6.5oz Buffer Torkmag Magwell Adapter for Glock Mags 1.1 ounces Weight minus sights 67.3oz |
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Posted: 2/3/2022 4:45:33 PM EDT
[#23]
Quote HistoryOriginally Posted By dejo: 9mm AR-9 Fostech Fighter Lite upper/lower and Fostech Mach-2 lite rail Smoke Composites Stock Form3d Grip Taccom ULW 16" barrel FM9 Bolt Carrier FM 6.5oz Buffer Torkmag Magwell Adapter for Glock Mags Weight minus sights 67.3ozhttps://postimg.cc/SYsw7NKs 
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Posted: 3/16/2022 8:49:28 AM EDT
[#24]
Double bonus for doing it in 9mm. Nice build
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AL, USA
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Posted: 3/16/2022 9:08:09 PM EDT
[#25]
Do builds with braces and short barrels count? Light weight wasn't even a consideration for this one.
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AK, USA
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Posted: 3/16/2022 10:26:51 PM EDT
[#26]
Quote HistoryOriginally Posted By StrangerDanger: This year has been a bad year to build a high end lightweight 223. The goal wasn't to just build a super lightweight rifle, but to build a reliable rifle that isn't stripped of features. https://i.imgur.com/lqILX6q.jpg V7 2055 upper, 14.5" Proof Research carbon fiber wrapped barrel, JP Enterprises LMOS bolt carrier group,V7 magnesium hyperlite rails that titanium mounting hardware, SLR titanium gas block, V7 inconel gas tube. B. E. Meyers 249 flash suppressor,RailScales KOS G10 rail covers, Modlite OKW weapon light on a Modlite light body. Scalarworks absolute co-witness RMR mount. The lower is still in parts, but it's from V7 in the 2055. Receiver extension is carbon fiber. Small parts rug thru Foward Control Design and V7 parts. Geissele trigger pack. All applicable parts are being sent out for NP3 plating soon. Plastics will be OD green and some items will be cerakoted OD green to match. |
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WA, USA
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Posted: 3/17/2022 3:51:36 PM EDT
[#27]
14.5" faxon pencil pin and weld, darklight magnesium handguard, bootleg adjustable bcg, lwrc uciw buffer tube with a custom 0.7oz buffer, modified MFT minimalist stock, and a bunch of V7/2A armament lightweight parts.
5lbs 8oz no can. 6lbs 3oz with the turbo K. It is very tempting to pull the backup irons and the light off this build.  
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Posted: 3/17/2022 6:45:47 PM EDT
[Last Edit: SOCOM76]
[#28]
6.25lbs, which isn't bad for an accurized precision rifle with a 16" barrel, standard weight BCG, and 1-6x24 LPVO. No compromise in reliability or durability.
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Posted: 3/19/2022 1:47:49 AM EDT
[#29]
   One of the latest builds I did, still deciding on things. Grip and stock are temporary, and I might move the mount and razor to a lightweight .308 build, and shed optic weight. Rifle was right at 4.5lbs and a hair under 7lbs with 1-10 Razor/Badger mount, and Thunder chicken suppressor. I have a saker 556 with plan B that I’ve been running on it lately for it’s smaller size, but It weighs more than the Thunder Chicken. But the saker is also a overbuilt tank. Both 3 shot and 5 shot groups @ 100yds were all sub MOA like the reports I read when researching barrel specs. Vseven makes outstanding barrels though very pricey. Gun shoots fast and handles fantastic. Specs: Vseven enlightened receiver set Vseven fluted light barrel assembly with their GB setup, with optional head spaced bolt. Vseven cam pin Vseven Hyperlight rail Vseven titanium FP Vseven ultra lightweight mag and bolt release, Vseven h2 buffer Vseven enhanced buffer tube, Vseven silent coated buffer spring, Vseven lw castle nut, Vseven ultra lw port door with modified receiver rod, Vseven ultra LW pivot pins, Vseven ultra LW charging handle, Vseven 3gun safety one-sided, Vseven trigger pins for ARGold Non Vseven parts: ArGold adjustable trigger Bootleg adjustable bcg (using Vseven bolt.) Badger Ordnance 1.93 mount. (J-arm is awaiting an RMR) Vortex gen 3 1-10 with throw lever Standard lpk springs Q cherry bomb (for Thunder Chicken, or Saker 556/plan b) |
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Posted: 3/20/2022 6:15:38 AM EDT
[#30]
Quote HistoryOriginally Posted By civgunner: Do builds with braces and short barrels count? Light weight wasn't even a consideration for this one. https://i.imgur.com/gmLWIlP.jpg Since this is the 'ULTRA light weight' thread, no, this doesn't count. 'Ultra light weight' implies that you actually tried to make it light, which, clearly you didn't. |
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Posted: 4/9/2022 9:56:10 AM EDT
[Last Edit: safes2small]
[#31]
Ok, while I like my 10.5” SBR it’s kinda a pig. RRA URG and a old heavy ass YHM Phantom can. The barrel on this thing is 0.875” dia. (0.75” under the gas block).
 Attached File Attached File8# 8.2 oz Time for an update! 10.5” Faxon pencil barrel, Faxon BCG, Faxon gas block, MI SL9.25” FF tube, Aero slick side upper, car stock, Gemtech Trek T.  Attached FileBare weight 4# 12.4 oz  Attached File5# 13.5 oz with the MRO and can This is with a standard weight bcg and H3 buffer. Lost 2# 10.7 oz |
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Posted: 4/9/2022 7:32:35 PM EDT
[#32]
Anybody weigh the new magpul dust cover yet?
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NC, USA
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Posted: 4/13/2022 9:02:09 PM EDT
[#33]
Figured ya'll might be able to help me out in here as I hear the OG KMR magnesium rails are on the lighter side and sought after.
What's a 13" Magnesium KMR rail worth these days? |
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AZ, USA
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Posted: 4/15/2022 2:49:43 AM EDT
[#34]
Quote HistoryOriginally Posted By 4nik8r: This looks amazing so far. Love that rail with the scales touching. Please post pics and weight when complete! This one did get finished up, in full NP3 plating and a mix of cerakote for cosmetics for parts that couldn't be plated. I even took apart the CTR stock and plated what I could. End weight was around 5 lbs, 10 ounces. JP LMOS bolt carrier, JP silent buffer, Andros carbon fiber receiver extension, SLR rifleworks titanium adjustable gas block, B.E. Meyers 249 flash suppressor, Proof Research 14.5" barrel, Railscales KOS panels and Railscales QDX sling mounts, Scalarworks optic mount. Trijicon RMR 1moa dot size. Modlite 18650 with an OKW lamp head. Lots of small parts from FDC and V7.     |
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Posted: 4/17/2022 6:33:10 AM EDT
[#35]
This is the “WWMD” rifle. (what would Mikey do) lol
As shown it’s 5.65 lbs. PSA receivers done with gray ano Bushmaster 1/8 pencil barrel LWRC UCIW stock AR180 grip from BigRix Chrome bcg Handguard I found in the scratch and dent bin Gray CH Std lpk 
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Posted: 4/22/2022 8:59:58 AM EDT
[#36]
Got pieces slowly showing up in the mail, hoping to be under 6lbs without spending a fortune
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Posted: 4/28/2022 8:14:40 AM EDT
[#37]
Anyone happen to know the weight on these uppers from PSA? @PalmettoStateArmory @JJE
Link to pencil weight upper @$389.00 with BCG/CH Seems like it would be a great cheapo upper to pair with a KP-15. |
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Posted: 4/28/2022 11:19:57 AM EDT
[#38]
I’m not sure what the weight of the upper is, but if a colt pencil barrel carbine is under 6, which it is, I don’t see how that set up could possibly be over. Looking forward to seeing your build.
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Posted: 4/28/2022 11:25:20 AM EDT
[#39]
Quote HistoryOriginally Posted By L119188: I’m not sure what the weight of the upper is, but if a colt pencil barrel carbine is under 6, which it is, I don’t see how that set up could possibly be over. Looking forward to seeing your build. Will order one in a few weeks. Got to take care of some other things first. Can get a weight on my KP. |
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Posted: 4/28/2022 7:26:39 PM EDT
[#40]
Quote HistoryOriginally Posted By swampfoxoutdoors: Anyone happen to know the weight on these uppers from PSA? @PalmettoStateArmory @JJE Link to pencil weight upper @$389.00 with BCG/CH Seems like it would be a great cheapo upper to pair with a KP-15. Standing on a scale with and without the upper gives me four pounds even with the DD sights. Same upper but with a 13" handguard. I haven't shot this one yet but like my first one. @swampfoxoutdoors  Attached File |
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Posted: 4/28/2022 7:38:33 PM EDT
[#41]
Quote HistoryOriginally Posted By brachiosaur: Standing on a scale with and without the upper gives me four pounds even with the DD sights. Same upper but with a 13" handguard. I haven't shot this one yet but like my first one. @swampfoxoutdoors https://www.ar15.com/media/mediaFiles/516916/IMG_20220428_182052347_jpg-2365301.JPG Looks sharp! |
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Posted: 4/28/2022 8:07:30 PM EDT
[#42]
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Posted: 5/13/2022 11:04:49 AM EDT
[Last Edit: L119188]
[#43]
Quote HistoryOriginally Posted By balane: Wish I could post a photo but scale says 6 Lbs. 0.2 Oz. (Without mag inserted.) Maybe you could sandpaper the anodizing off of the inside of the mag well? That should put you under. :) |
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Posted: 6/17/2022 11:48:18 AM EDT
[#44]
PSA pencil barrels back in stock.
PSA link 16" pencil lite weight upper with BCG $329 Have a KP-15 I will put this on. Will get pics and weights when it gets in. |
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Posted: 6/17/2022 5:37:21 PM EDT
[Last Edit: 917-30]
[#45]
Quote HistoryOriginally Posted By swampfoxoutdoors: PSA pencil barrels back in stock. PSA link 16" pencil lite weight upper with BCG $329 Have a KP-15 I will put this on. Will get pics and weights when it gets in. Link doesn't work for me. Eta https://palmettostatearmory.com/psa-16-mid-length-pencil-5-56-nato-1-7-nitride-13-5-lightweight-m-lok-upper-w-bcg-and-ch.html I used one of these for an AR I assembled for my BIL. It shoots better than my 16" SS pencil barrel PSA that made him want an AR. Hell, it shoots better than any of my 16" ARs. It's light, too. |
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Posted: 6/17/2022 5:56:42 PM EDT
[#46]
Quote HistoryOriginally Posted By 917-30: Link doesn't work for me. Quote HistoryOriginally Posted By 917-30: Originally Posted By swampfoxoutdoors: PSA pencil barrels back in stock. PSA link 16" pencil lite weight upper with BCG $329 Have a KP-15 I will put this on. Will get pics and weights when it gets in. Link doesn't work for me. https://palmettostatearmory.com/psa-16-mid-length-pencil-5-56-nato-1-7-nitride-13-5-lightweight-m-lok-upper-w-bcg-and-ch.html I bought one recently (the lower rifle) but have only taken it out once. I will say the NiB BCG in my older one feels nicer though that could be the stock breaking in. This is a backup/iron sight rifle, it functions and is mostly sighted in.  Attached File |
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Posted: 6/17/2022 7:05:56 PM EDT
[#47]
How much do they weigh?
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Posted: 6/18/2022 1:35:48 AM EDT
[Last Edit: 917-30]
[#48]
Quote HistoryOriginally Posted By L119188: How much do they weigh? One of the answered questions on the page for the upper said that a very similar one weighed 3.25 lbs. I weighed the upper for my BIL but can't remember how much it was but 3.25 lb. sounds close. With a Magpul stock and grip on a PSA SNEK lower w/PSA lower kit, MBT-2S trigger, UTG M-LOK sling mount & swivel, silent sling, and PA red dot it weighed 6 lb. 8 oz. Found a crappy picture of the AR. It had a slightly different lightweight handguard than the upper PSA has on sale now.  Attached File |
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Posted: 6/30/2022 10:20:43 PM EDT
[Last Edit: swampfoxoutdoors]
[#49]
Finally received the PSA pencil weight upper I bought 2 weeks ago. Guess they are super busy with orders.
Kinda disappointed in the barrel. It’s kinda a in between pencil weight and medium weight. Think a few Oz could be shaved off for sure. Here is it compared to my faxon pencil in the camo.  Attached FileThe build quality is very nice and really like the rail. Although a carbon fiber would be lighter in weight. With kp15 naked 5.7lbs on my bathroom scale.  Attached FileWith 3-9x40 scope 7lbs And 7.9 fully loaded  Attached FileAnd how I plan on using it with thermal. 6.3lbs  Attached File |
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OR, USA
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Posted: 7/24/2022 4:00:06 PM EDT
[#50]
This thread needs CPR so I will update my NFG build from a few posts earlier.
My Nomad Ti finally came home. Added a Griffin Plan-A and titanium shortbrake. Was hoping to get it all in under 6 and got 5lb13oz. This is with can, optic, and MBUS pro, ie everything except a mag and rounds.   
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