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Gas Block Problem

Put together a new .308 gas gun a few weeks ago and I'm having a hell of a time getting the gas system running. Thought I'd see if anyone here has faced a similar issue. The components are as follows:

LaRue 16" Midlength Barrel
Superlative Arms Adjustable Gas Block
Melonited Mid-Length Gas Tube

I've assembled a lot of gas guns over the years and have never had this much trouble with a gas system. I installed everything and test fired only to seemingly get no gas to the bolt. So, I disassembled and the reassembled with the same result. I'm wondering if it is an issue with the gas block or gas tube. I have a new gas tube coming to see if that fixes things. I used the spaghetti trick to make sure the gas hole is lined up with the gas block.

This is the first time I've tried a SA adjustable block, so I'm not sure if there is a defect with the gas block. I set it up per the instructions, but I don't know if I might also be doing something wrong. I guess I can replace the gas block with a standard one as well to make sure it's not a barrel or bolt issue.

Anyone have suggestions or other obvious things I might be missing?

Firearms Premium AR-15 – CLE Krieger 20” .223 + 18” Proof 6mm ARC Upper

Guys, this is a pretty special, seriously badass AR-15 setup. Built for precision and performance, it features top-tier components that make it an absolute tack driver. Here’s what you’re getting:



The Rifle


• V7 Enlightened Upper & Lower Receiver – Lightweight and high-quality.


• .223 Upper


• Compass Lake 1:7 Krieger Heavy Barrel – Insanely accurate.


• AR-419 Sidewinder Brake – Keeps recoil minimal and shots on target.


• Full-Length Geissele ARCA Rail – Rigid, stable, and ready for precision shooting.


• JP Low Mass Bolt Carrier Group – Matched with a Compass Lake match bolt for ultimate reliability.


• V7 Upper (No Forward Assist) – Sleek, lightweight, and purpose-built for precision.





The Lower


• V7 Lower Receiver – Lightweight and durable.


• A5 Vltor System – Enhanced recoil management.


• PRS Lite Stock – Adjustable and ergonomic for long-range precision.


• Geissele Single-Stage Trigger – Clean, crisp break for precision shooting.


• Forward Controls Parts Throughout – High-quality components for an ultra-refined build.





Bonus Upper (Brand New, Never Fired)


• Proof Research 18” Stainless Steel 6mm ARC Barrel – Lightweight, accurate, and designed for high-performance.


• Geissele ARCA Rail – Full-length for rock-solid stability.


• Hodge Bolt Carrier Group – Exceptional reliability and durability.


• JP High-Performance Bolt – Built for precision and longevity.


• Ambi Charging Handle – Smooth and ergonomic for easy manipulation.


I will include Dura and or Giessle 6mm ARC Mags to the Buyer


Price: $3,250





This is a complete high-end AR-15 + an additional upper, ready to dominate at the range or in competition. You’re getting an incredible deal on a turnkey precision rifle built with some of the best components.

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Accessories XLR Element 4.0 Magnesium and Aluminum chassis in stock!

We have the XLR Element 4.0 in stock with new options as described below:

XLR Element 4.0 Magnesium models come with a Carbon Fiber grip and stock:


XLR Element 4.0 Aluminum models come with a Ergo grip and C6 stock:





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XLR Element 4.0 SA Aluminum with the C6 Stock
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Accessories Arca Mounted Barricade Stops

New Arca Mounted Barricade Stop - $35+Shipping​



Our barricade stop is ideal for any rifle with an exposed magazine. This provides a perfect impact point to limit impact on your mag and feeding issues.​



Website - Barricade Stop




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Website - Thin Barricade Stop

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Accessories Ultralight Arca Rail - MLOK, Keymod, Manners

New Ultralight Arca Rail - MLOK, Keymod, Manners and Custom Available​


The Modular Arca Rail System (M.A.R.S.) is manufactured from a chopped carbon fiber fill nylon composite. These arca rails provide a very good balance of strength and weight, and adhere to the RRS Dovetail Standard. This modular system allows you to combine any of our arca rail sizes. (see below) All rails will ship with stainless steel hardware for corrosion resistance.

Website - Arca Rails



Also available:​

Manners:​

Long Range Hunter (LRH) Long Action and Short Action - $75 + Shipping​

TF2A Short Action - $75 + Shipping​

PR1 Short Action - $75 + Shipping​

T6A Long Action - $75 + Shipping​

JP Rifles:​

Long Range Precision (LRP) - $75 + Shipping​


See below for sizing for both MLOK and Keymod.​

MLOK and Keymod Pricing​

3" MLOK or Keymod - $30 + Shipping​

6" MLOK or Keymod - $45 + Shipping​

9" MLOK or Keymod - $60 + Shipping​

12" MLOK or Keymod - $75 + Shipping​


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Optics Huge Scope Purge Element/GPO/Maven/Athlon/Burris/Trijicon

Selling a bunch of scopes, all as new minus the Trijicon and come in the original boxes with all paperwork and accessories as shipped new.

1) Element Nexus Gen 2 4-25x50 FFP APR-1C MOA reticle. $1150 shipped

2) GPO Centuri 3-12x44I C super compact G4I reticle. Brand new $350 shipped SOLD

3) Maven RS 3.2 5-30x50 FFP SHR-MIL reticle. $1050 shipped SOLD

4) Athlon Helos BTR Gen2 4-20x50 FFP APR56 IR MIL reticle $525 shipped

5) Athlon Helos BTR Gen2 2-12x42 FFP AHMR2 IR MIL reticle $425 shipped SOLD

6) Burris XTR III 3.3-18x50 FFP SCR MOA non illuminated reticle. $695 shipped

7) Trijicon Tenmile 4-24x50 SFP MRAD ranging LED illuminated dot reticle model 3000007. No box and a few handling marks. $850 shipped

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Left Hand Sale Left Hand Customs Zermatt Lone Peak Tikka 6 PRC/6.5 PRC/7mm-08/300 Win Mag

Selling 4 left handed customs

1) 6 PRC
Lone Peak Razor TI action
22'" 7.5 twist .140 freebore threaded 5/8-24 proof research carbon barrel chambered by Cloud Peak
MDT HNT-26 folder with Salmon River hunter rail
Hawkins 30mm rings
Bix N Andy Tacsport trigger
Few hundred rounds on barreled action, rest brand new, will come with thread protector not suppressor mount

$2950 shipped

2) 6.5 PRC
Zermatt TL3 medium length Left bolt, Right eject action
24" carbon proof research chambered barrel 7.5 twist threaded 5/8-24 brand new unfired
XLR Element Magnesium medium with TR-2 buttstock and thumb rest and MDT carbon grip
Triggertech diamond pro curved trigger
MDT 5 round medium magazine
Will come with thread protector, not suppressor mount

$2850 shipped

3) 7mm-08
Stainless Tikka action
Preferred Barrel blanks 21" Taperless stainless 820 5R 9 twist double hexagon fluted barrel threaded 5/8-24 cerakoted flutes sniper grey
Manners EH1 stock with adjustable cheek and Salmon River hunter rail
Hawkins 30mm rings
Mountain tactical bolt knob and trigger spring
CTR bottom metal and 2 10 round magazines
Will come with thread protector, not suppressor mount

$2100 shipped

4) 300 Win Mag
Tikka blued action
24" carbon proof research chambered barrel 10 twist threaded 5/8-24
XLR Element aluminum chassis with TR-2 buttstock and thumb rest
MDT magazine
Warne rings
Maven RS.5 4-24x50 scope
Mountain tactical bolt knob and trigger spring
20 rounds on completely new setup
Will come with thread protector, not suppressor mount

$2600 shipped

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Optics WTS: Vortex Gen III 6-36, Gen III 1-10 - Free Shipping

Both scopes in excellent condition. No trades or breaking up mounts.

Vortex Razor HD Gen III - 6-36x56 - EBR-7D MOA Reticle - FFP
Excellent condition. Comes with original box and optional 1 pc Steiner scope mount with level
$2200 $2100 Shipped
$2300 $2200 Shipped with Mount and Level
More pics below...

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Vortex Razor HD Gen III - 1-10x24 - EBR-9 BDC MOA Reticle - FFP
Pristine condition with 1 pc Athlon 20 MOA scope mount. Comes with original box.

$1900 $1800 shipped.

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Additional pics of both scopes...
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Firearms Savage 12 LRP - 6.5CM with XRS Scope

Savage Model 12 Long Range Precision - 6.5CM
Bushnell XRS Scope
Harris Bipod
Cheek Piece Installed

I helped put this together for my brother-in-law to go shooting with me. He no longer lives near me and it's going up for sale.

I think we put about 100-150 rounds through it. Everything is flawless

Tossing in a Midway bag, and rear bag. All you need is ammo.

Asking $1,800

I'm located in DFW Metroplex. We can meet near Texas Motor Speedway. Shipping at your expense.

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Weirdness with Lot-Tested Center-X

Summary:
  • Had my 1st-gen Vudoo tested at Lapua's AZ test center early 2020. Bought 2 cases Center-X. I'm down to three (3) bricks of it.
  • Over thousands of rounds, this ammo has averaged ~1080fps with an SD ~7-9, depending on temperature.
  • Accuracy is a consistent 1.0 - 1.1 MOA @100, with plenty of 1/2-3/4" groups to be had.
  • Then, last month at a monthly gallery-style match, I missed four 100-yard targets. Perspective: to that point, over the last three seasons and 18 matches, I missed a total of 7 100-yard targets.
  • I thought my scope (ZCO 527) had crapped the bed... Yesterday I learned otherwise: Every round chronographed in one box of this ammo was 50-70fps slower than the historical average. JUST THE ONE BOX.
  • Ammo has been stored in benign HVAC-controlled environment, temp 65-75 F. / humidity 45-55%. Definitely no solvents, WD-40, etc. stored in the same room or even in the same wing of the building.
So today I took the remaining 20 rounds from that "bad" box to the range along with the remaining seven boxes in the brick (two boxes fired at the disastrous match). I tested 5-10 rounds out of each box. None of the rounds tested from the "unknown" seven boxes chrono'ed low; in fact, four box's samples tested about 10-15fps high. After each "unknown" sample, I fired a couple of rounds from the "bad" box - all of which were 50-60fps slower than historical average.

Lessons learned:
  • Before using the remainder of this lot-tested Center-X in competition, I will test five random rounds from each box.
  • In fact, from now on, I'll sample a few rounds from every box from every lot I ever buy again before competing with them.
  • I'll only buy one case after the next test session. Given the "profile" of how these weird rounds presented, I doubt that the ammo's age is the cause of these two boxes (from the same brick) having such low velocity. (Note: I shoot a lot of SK ammo to save the lot-tested stuff.)
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Anybody else ever experience anything like this? I've seen some puzzling things in six decades of shooting, and this one is brand-new!
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And so it begins...

Building my first bolt gun. Went with a Zermatt Origin action for ease of barrel install and caliber changes in the future with the swappable bolt head. TrigerTech Diamond 2 stage got here yesterday and a MDT ACC Premier chassis is on order. Still not sure about caliber yet. Got .445” and .473” bolt heads. Kind of between 6arc and 6.5cm.

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Optics FDE NightForce 7-35 ATACR

Like new flawless 7-35 ATACR in Mil-XT
With Spuhr SP-4002 and I think it’s a Tango flip out level??. Box and everything that comes with it included.

Smoking deal $3000 + shipping

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Accessories Gen2 Garmin Xero Mount, arca/ picatinny compatible, NV bridge mount.

The Gen2 arca/picatinny mount for the Garmin Xero chrono is compact, durable and affordable. compatible with both arca and picatinny, its a great addition to an excellent chronograph. $30 shipped available in black, od green and orange. We also have the NV bridge mount for the Garmin Xero, $25shipped available in black.

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Accessories Lightweight bolt knobs

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The Bolt Knob is lightweight, durable and affordable. perfect for shedding weight on an NRL hunter rifle. Made from a durable nylon cf material that is fully supported by a steel bolt for superior durability.
1/4-28 threads: lonepeak, zermatt,
5/16-24 threads: defiance
terminus/curtis
M6x1: Bergara, CZ, Ai
Knurled .5oz
Cone .9oz
Ball .7oz
do not torque more than 25inch pounds
$25 shipped
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Accessories pen caddy v1

The pen caddy is a great way to keep your pens organized. The caddy utilizes shock cord to mount to your tripod or anything you’d need some pens for. it has spots for two pens and was built around the lumocolor wet erase pens but will fit a variety of others. the caddy also features a loop to hook your lens cloth onto. $10 plus shipping
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Reloading Equipment Powder Sale.

I have,
10lb of BL-C2 powder for sale.
All new unopened.
Also 1lb of CFE223.
Selling as one lot $475 shipped via FFL.

8lb of 2000 MR unopened.
$450 shipped via FFL.

8lb IMR 4064.SOLD

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Firearms WTS: Kimber KDSC9 Rail with Accessories, and Mags (8) total (2-18's)(6-15's)

I have a nearly new KDSC9 Rail that has the Sniper Grey Lower, with Black Top end. Less than 100-rounds though it. I just can't get rid of the “glock grip” angle while shooting, and figure I will let the 1911 grip angle go to someone that really likes it. That and I have some med bills to pay for a knee surgery, so I will be out of action for a bit. Here is what I have that I would like sell as a package, and what I paid for it. I am asking $1900, shipped, you cover insurance. FFL to FFL. May part out the the EPS, and Olight if the pistol sells first

(1) KDSC9 Rail (Grey Black Night Sights) (2-15-round Mags) $1,699.99
(1) Kimber Optics plate for Holosun $100
(2) 18-Round Extended Magazines $65.00 each
(4) 15-round Mags $40.00 Each
(1) Holosun EPS Carry GR-MRS (Green Dot or Circle Dot) $400.00


Total Paid: $2,719 Asking $1900


Shoot me a PM with any questions or additional photo requests. For feedback or references Sasquatch98226 is my screen name on AR15.com, among other forums. Sasquatch981 is for E-bay and Brian Enos forums as they came first hence the different Screen name. Check me out

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