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Posted: 6/19/2017 5:19:03 PM EDT
[#1]
Quote HistoryOriginally Posted By RogueNathan:
Very nice. How is the barrel treating you? |
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WA, USA
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Posted: 6/19/2017 7:42:38 PM EDT
[#2]
Rough mock up. Still missing a few parts like gas tube and gas block, castle nut. Sent the bbl in to adco today to get skinnier. Still thinking on optic. Back and forth. |
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Posted: 6/29/2017 4:32:43 PM EDT
[#3]
Been shooting it for a few months and finally settled into the configuration I'm most happy with.
5 lbs 10 oz on the dot. 
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IA, USA
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Posted: 7/5/2017 11:17:05 AM EDT
[#4]
My second lightweight build. 5lb 8.9oz
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FL, USA
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Posted: 7/5/2017 8:05:07 PM EDT
[#5]
Quote HistoryOriginally Posted By JDennis:
My second lightweight build. 5lb 8.9oz http://imageshack.com/a/img922/5273/H8aHPf.jpg http://imageshack.com/a/img923/5483/ej1PZq.jpg |
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Posted: 7/28/2017 12:51:03 AM EDT
[Last Edit: jekbrown]
[#6]
My very long term project is nearing it's end. LW SBR...
Without mag: 3.47 lbs With mag: 3.63 lbs Not bad. Had a hell of a time with this build, even if it did take FOREVER. With a CF stock, a Ti carrier, and a different lower it could have been 3 lbs or even less, but I had my reasons for compromising weight at times. I basically chose to keep everything 'out front' as light as I could possibly get it. Haven't shot it yet, but it's going to take some getting used to with respect to transition speed. It's craazy light in front.  Now....time to select and RDS and mount. I was going to go with a Shield, but I'm having second thoughts. Might just run a vortex or FF3. We'll see. Whatever it is, it'll be light. 
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FL, USA
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Posted: 7/28/2017 5:58:37 AM EDT
[Last Edit: larrys]
[#7]
Great looking build! I like the color combo.
What trigger gaurd is that? Looks like a solid pin on the front. Is that the lowest weight on this thread so far? |
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Posted: 7/28/2017 8:31:28 AM EDT
[Last Edit: jekbrown]
[#8]
That is a damage industries "thin" enhanced TG that I had a 1/4" slot milled into. The final weight was slightly lower than a standard milspec trigger guard, which may be decades old but is still one of the lightest on the market.
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Posted: 7/28/2017 10:01:56 AM EDT
[#9]
Quote HistoryOriginally Posted By jekbrown:
My very long term project is nearing it's end. LW SBR... https://ck5.com/forums/media/lw1.29878/full https://ck5.com/forums/media/lw2.29879/full https://ck5.com/forums/media/lw4.29881/full https://ck5.com/forums/media/lw6.29883/full https://ck5.com/forums/media/lw5.29882/full Without mag: 3.47 lbs With mag: 3.63 lbs Not bad. Had a hell of a time with this build, even if it did take FOREVER. With a CF stock, a Ti carrier, and a different lower it could have been 3 lbs or even less, but I had my reasons for compromising weight at times. I basically chose to keep everything 'out front' as light as I could possibly get it. Haven't shot it yet, but it's going to take some getting used to with respect to transition speed. It's craazy light in front. Now....time to select and RDS and mount. I was going to go with a Shield, but I'm having second thoughts. Might just run a vortex or FF3. We'll see. Whatever it is, it'll be light. |
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Posted: 7/28/2017 10:30:03 AM EDT
[Last Edit: jekbrown]
[#10]
I think Stoner would appreciate my AR. He loved the idea of using new materials in the platform and I've replaced almost all of the steel parts that can be replaced (there's still springs, the bbl, pins (some of them!), the bolt catch, and the BCG) with lighter materials. CF and Titanium and cool Al alloys would make him happy.
At some point I'm going to make a non-NFA ultralight using a poly lower and CF stock/extension along with a faxon pencil 14.5/pinned FH...Stoner would prolly like that build plan too. 
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Posted: 7/30/2017 11:51:43 AM EDT
[#11]
Exactly 6 pounds without a magazine. Still deciding on an optic.
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FL, USA
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Posted: 7/30/2017 12:54:02 PM EDT
[#12]
Quote HistoryOriginally Posted By CCLJ03:
Exactly 6 pounds without a magazine. Still deciding on an optic. https://i.imgur.com/fDUyj6m.jpg |
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Posted: 7/30/2017 2:27:56 PM EDT
[#13]
Quote HistoryOriginally Posted By larrys:
Nice looking weapon! Quote HistoryOriginally Posted By larrys:
Originally Posted By CCLJ03:
Exactly 6 pounds without a magazine. Still deciding on an optic. https://i.imgur.com/fDUyj6m.jpg |
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Posted: 8/9/2017 8:24:05 PM EDT
[#14]
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TN, USA
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Posted: 8/17/2017 1:59:46 PM EDT
[#15]
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Posted: 8/17/2017 4:14:47 PM EDT
[Last Edit: caser]
[#16]
Quote HistoryOriginally Posted By skirch56:
My new grendel build. https://www.AR15.Com/media/mediaFiles/105781/20170809_192026-4032x3024-276124.JPG 5 lb 14 oz |
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USA
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Posted: 8/17/2017 4:47:54 PM EDT
[Last Edit: 871JZ]
[#17]
Quote HistoryOriginally Posted By Nalleywacker:
6lbs .05oz with a empty hexmag http://i976.photobucket.com/albums/ae246/nalleywhacker/Mobile%20Uploads/IMG_20170816_235315-01_zpshnxpvkxp.jpeg |
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TN, USA
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Posted: 8/17/2017 5:36:44 PM EDT
[#18]
Quote HistoryOriginally Posted By 871JZ:
Nice looking. SBR in progress? |
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FL, USA
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Posted: 8/17/2017 7:18:54 PM EDT
[#19]
Anyone have feedback on the new Fostech lowers?
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WA, USA
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Posted: 8/19/2017 6:54:04 PM EDT
[Last Edit: Usernames]
[#20]
Quote HistoryOriginally Posted By ar15joe:
Anyone have feedback on the new Fostech lowers? Just inserting pins and mags, the paint finish comes off, scratches easily. The mold isn't perfect either. Showing some lines and imperfections. But functions good so far. And really light. 
Not the best pic, but look near the bolt catch. Will try to get a better pic. Here's a couple more: 
.. Magwell of the fostech lower. The coating or paint they used is scraping off after light use. (Was like this immediately after the first few insertions). ... 
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WA, USA
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Posted: 8/19/2017 7:09:44 PM EDT
[Last Edit: Usernames]
[#21]
I said "eff it" and krylond it.
6.5grendel 18" bbl. 5lbs 14oz with 3-9x scope 
With 18 rounds of 123 grain grendel ammo. ... 
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Posted: 8/19/2017 7:12:50 PM EDT
[Last Edit: jrs93accord]
[#22]
 Attached File Attached File5 lbs. 14.7 ozs. (without magazine) 6 lbs. 2.8 ozs. with magazine (empty) |
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Posted: 8/20/2017 1:38:09 PM EDT
[#23]
Quote HistoryOriginally Posted By caser:
How does that rifle feel with that scope on it? Top-heavy? Quote HistoryOriginally Posted By caser:
Originally Posted By skirch56:
My new grendel build. https://www.AR15.Com/media/mediaFiles/105781/20170809_192026-4032x3024-276124.JPG 5 lb 14 oz |
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Posted: 8/20/2017 5:57:43 PM EDT
[#24]
Damn there's some nice builds in this thread.
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WA, USA
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Posted: 8/21/2017 10:00:45 AM EDT
[Last Edit: JerDerv]
[#25]
4lbs 9oz
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Posted: 8/21/2017 10:59:31 AM EDT
[#26]
Quote HistoryParts list? I like this.
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WA, USA
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Posted: 8/21/2017 12:02:34 PM EDT
[Last Edit: JerDerv]
[#27]
Quote HistoryOriginally Posted By hfrog355:
Parts list? I like this. Upper: Aero Precision no FA upper receiver_06.2oz Anderson Mil spec CH w/ v7 latch_01.0oz V7 Port door_00.4oz Faxon 16" 4150 Pencil barrel_19.3oz DSA Titanium A2 Flash Hider no crush washer_01.2oz 2A Regulated BCG_08.0oz Spikes Melonite gas tube_00.8oz 2A Titanium gas block_00.8oz ALG V2 Modified 9 5/8"_06.6oz ALG EMR Barrel nut and hardware_02.4oz ALG Co witness rai_00.8oz M-lock 3 slot poly_00.3oz UPPER TOTAL: 48.0oz or 3lbs Lower: Aero Precision Lower Gen 2_8.1oz Spikes Enhanced battle trigger_1.9oz V7 Take down and pivot pins Aluminum_0.2oz V7 Safety 3 gun hybrid AL/TI 57* RH_0.3oz V7 Bolt catch S7 tool steel_0.3oz V7 Mag catch Aluminum_0.2oz V7 End plate Aluminum_0.2oz V7 Castle nut Aluminum_0.3oz V7 Ti Buffer retainer_0.1oz v7 Ti Grip screw_0.1oz Modified ERGO Swift grip_2.0oz Magpul poly Trigger guard_0.3oz Modified PSA PA10 buffer tube_3.8oz Knock off BAD Buttstock_2.6oz Modified buffer_0.7oz Tubb's SS .308 spring trimmed_2.0oz LOWER TOTAL: 23.1oz or 1lbs 7.1oz LOWER+UPPER TOTAL: 4lbs 7.1oz DD A1.5 Rear Sight_1.7oz DD A1.5 Front sight_1.1oz SIGHT TOTAL: 2.8oz RIFLE TOTAL:______72.9oz______4lbs 9.9oz______4.61lbs______ Picture because picture thread. 
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Posted: 8/21/2017 7:32:54 PM EDT
[#28]
Quote HistoryOriginally Posted By JerDerv:
Its a cheap scale so don't take the weights as exacts. Upper: Aero Precision no FA upper receiver_06.2oz Anderson Mil spec CH w/ v7 latch_01.0oz V7 Port door_00.4oz Faxon 16" 4150 Pencil barrel_19.3oz DSA Titanium A2 Flash Hider no crush washer_01.2oz 2A Regulated BCG_08.0oz Spikes Melonite gas tube_00.8oz 2A Titanium gas block_00.8oz ALG V2 Modified 9 5/8"_06.6oz ALG EMR Barrel nut and hardware_02.4oz ALG Co witness rai_00.8oz M-lock 3 slot poly_00.3oz UPPER TOTAL: 48.0oz or 3lbs Lower: Aero Precision Lower Gen 2_8.1oz Spikes Enhanced battle trigger_1.9oz V7 Take down and pivot pins Aluminum_0.2oz V7 Safety 3 gun hybrid AL/TI 57* RH_0.3oz V7 Bolt catch S7 tool steel_0.3oz V7 Mag catch Aluminum_0.2oz V7 End plate Aluminum_0.2oz V7 Castle nut Aluminum_0.3oz V7 Ti Buffer retainer_0.1oz v7 Ti Grip screw_0.1oz Modified ERGO Swift grip_2.0oz Magpul poly Trigger guard_0.3oz Modified PSA PA10 buffer tube_3.8oz Knock off BAD Buttstock_2.6oz Modified buffer_0.7oz Tubb's SS .308 spring trimmed_2.0oz LOWER TOTAL: 23.1oz or 1lbs 7.1oz LOWER+UPPER TOTAL: 4lbs 7.1oz DD A1.5 Rear Sight_1.7oz DD A1.5 Front sight_1.1oz SIGHT TOTAL: 2.8oz RIFLE TOTAL:______72.9oz______4lbs 9.9oz______4.61lbs______ Picture because picture thread. http://i.imgur.com/sYzHwU5.jpg Your buffer is badass. What size slots and hole? I may steal that idea. |
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Posted: 8/21/2017 8:50:07 PM EDT
[#29]
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VA, USA
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Posted: 9/6/2017 10:22:05 PM EDT
[#30]
That's an awesome thread. Are there any off the shelf units you can buy in the 6lbs range?
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USA
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Posted: 9/8/2017 2:36:48 PM EDT
[#31]
Quote HistoryOriginally Posted By ad_nauseam:
That's an awesome thread. Are there any off the shelf units you can buy in the 6lbs range? Colt 6720 Delton sport lite Etc |
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Posted: 9/14/2017 12:33:48 PM EDT
[#32]
Finally finished this build.
All metal stock, receiver and handgaurd. The final weight came in at 3.825 lbs. with red dot but no mag. Haven't shot it yet, hoping to get it to the range this weekend. 
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WA, USA
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Posted: 9/14/2017 1:14:55 PM EDT
[#33]
That thing is rad! Can we get a parts list?
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Posted: 9/14/2017 2:11:32 PM EDT
[Last Edit: larrys]
[#34]
Quote HistoryOriginally Posted By JerDerv:
That thing is rad! Can we get a parts list? BAD billet receiver upper Faxon 14.5 Slim pencil barrel with perm FH BAD Ti gas block Mid length black nitride gas tube Shield SMS with poly mount Strike Phantom CH JP aluminum low mass BCG/RCA adjustable gas key SLR Helix 10.7" hand guard BAD billet receiver lower V7 ultra light bolt catch V7 Ti RH selector V7 aluminum takedown pins V7 Ultru LW aluminum mag release V7 Ti trigger pins Ti bolt catch plunger (I think from EBay) Hogue 15° grip (modified) Aluminum grip screw BAD Sabertube stock (modified) Elftman 3gun trigger Taccom low mass Buffer (modified) Tubbs flat wire spring (not lightweight) All remaining pin/spring are milspec kit I'll probably switch over to the 2A Ti BCG eventually, which will only add a few tenths of an ounce |
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Posted: 9/14/2017 4:24:52 PM EDT
[#35]
sick build larrys, especially considering how little carbon fiber / polymer you used. Can't get much lighter with current off the shelf stuff. Very nice!!!
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Posted: 9/16/2017 2:57:46 PM EDT
[Last Edit: larrys]
[#36]
Thanks jekbrown, I'm really happy with it. I think I could get it damn close to 3.5 and stay all metal but it would be a lot of work and money.
The V7 hyperlite 11.1 alone would have it at 3.68 lbs. I'm leaving as is for now. Next build will be on the Fostech magnesium receivers to see what I can get down to. |
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TX, USA
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Posted: 9/25/2017 9:27:53 PM EDT
[Last Edit: TheGageinator]
[#37]
Well here it is. 3.414lbs. |
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Posted: 9/25/2017 9:44:58 PM EDT
[Last Edit: PursuitSS]
[#38]
....
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Posted: 9/25/2017 9:59:50 PM EDT
[Last Edit: themagikbullet]
[#39]
Holy moly there are some serious exotics in here!
Here's my pile o' parts:  Attached Filecan add a 2a fh and washer for another 1.2oz or my direct thread omega for another 11.55oz. 2a balios lw set v7 port door and rod bcm kmr with v7 nut and clamps bcm 11.5" elw-f bcm qd sling mount geissele sd-c v7 lower parts lw badass ambi safety pws buffer tube mdt stock slr 6 in titanium whatever gas tube faxon lw bcg aimpoint h1 in scalar works mount radian raptor lt i think the buffer is an H, bcm buffer spring |
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Posted: 9/26/2017 12:20:46 AM EDT
[#40]
Quote HistoryOriginally Posted By TheGageinator:
https://s26.postimg.org/gz6upclmx/20170119_134125.jpg Well here it is. 3.414lbs. |
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Posted: 9/26/2017 6:01:11 PM EDT
[#41]
Quote HistoryOriginally Posted By jekbrown:
OD specs? The faxon is a standard pencil, so it's 0.625. that leaves 0.2005" or so of bbl thickness. Not sure much less than that is safe, or even if it was, very rigid. You have piqued my curiosity though. Od? 
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Posted: 9/26/2017 7:01:26 PM EDT
[Last Edit: IMachineGuns]
[#42]
How about the under 4 crowd?
3lb11oz. 
Brian |
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PA, USA
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Posted: 9/26/2017 8:34:03 PM EDT
[#43]
Quote HistoryOriginally Posted By IMachineGuns:
How about the under 4 crowd? 3lb11oz. https://www.AR15.Com/media/mediaFiles/395355/3lb10oz_22LR-318124.jpg Brian
I love all these lightweight builds, keep them up. |
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USA
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Posted: 9/26/2017 9:24:34 PM EDT
[#44]
That's the special Point Blank model. :)
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TX, USA
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Posted: 9/26/2017 10:18:32 PM EDT
[Last Edit: TheGageinator]
[#45]
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Posted: 9/26/2017 10:55:47 PM EDT
[#46]
Quote HistoryOriginally Posted By larrys:
Finally finished this build. All metal stock, receiver and handgaurd. The final weight came in at 3.825 lbs. with red dot but no mag. Haven't shot it yet, hoping to get it to the range this weekend. https://www.dropbox.com/s/3pvf1h2w6mc05zm/Photo%20Sep%2014%2C%2011%2053%2049%20AM.jpg?raw=1 https://www.dropbox.com/s/oc9blt2b3vra2hu/Photo%20Sep%2013%2C%201%2038%2011%20PM.jpg?raw=1 Please update when you have a chance to shoot it. I am looking at that same barrel/FH, but one of the reviews said the flash hider acts as a tuning fork when shot. I am curious if it happens regularly or if it was just a single instance. |
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Posted: 9/27/2017 10:22:19 AM EDT
[#47]
Ok fair enough added the Burris Fast fire and a mag 3lb 12oz
 You can see it firing on our instagram.
Brian |
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Posted: 9/27/2017 6:30:28 PM EDT
[Last Edit: larrys]
[#48]
Quote HistoryOriginally Posted By IMachineGuns:
Ok fair enough added the Burris Fast fire and a mag 3lb 12oz You can see it firing on our instagram.
https://www.AR15.Com/media/mediaFiles/395355/3lb15oz_2a22ulr-318511.jpg Brian How the heck did you do that? A few of the parts I see there aren’t the lightest available (stock, grip, RD), is there helium involved? |
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Posted: 9/27/2017 8:02:12 PM EDT
[#49]
Quote HistoryOriginally Posted By vkeith:
Nice! Please update when you have a chance to shoot it. I am looking at that same barrel/FH, but one of the reviews said the flash hider acts as a tuning fork when shot. I am curious if it happens regularly or if it was just a single instance. |
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Posted: 9/27/2017 8:15:34 PM EDT
[#50]
Quote HistoryOriginally Posted By jekbrown:
A lot of 3-4 prong flash hiders do this. The good news is, a rifle shot is about 100x louder than the "ping", which is really only annoying if you dry fire a lot. Quote HistoryOriginally Posted By jekbrown:
Originally Posted By vkeith:
Nice! Please update when you have a chance to shoot it. I am looking at that same barrel/FH, but one of the reviews said the flash hider acts as a tuning fork when shot. I am curious if it happens regularly or if it was just a single instance. |
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