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Firearms AR-10 with Elcan and 1100+ rds

Armalite AR-10 308
Mags (4)20rd (4)25rd (1)5rd
Elcan 1.5/6

Ammo
Federal 180- 3 boxes
Winchester 120- 2 boxes
Aguila 150-1 box
M80 ball -mag tech 8 boxes (50rd)/ ppu 4 boxes
IMI 168-500rd case
80 rounds in mags. I think they are 150 but I didn’t dig too deep into it.

Asking $4500

Bought this years ago and never really shot it. Honestly I forgot it was back there.

Getting into NV/thermal. Expensive hobby. Live in western PA. If you are within a couple hours I can make the drive to meet.

Would consider trade
pvs-14 with a good tube white
Mdt ess chassis
Terminus Zeus
Nightforce atacr

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EOTech Holographic Sight Parallax Induced POA Error Compared to Reflex Red Dot Sights

Optics Tested:
  • EOTech EXPS3 holographic weapon sight
  • Trijicon Patrol MRO reflex red dot weapon sight
  • Holosun 530-RD reflex red dot weapon sight
Summary of Measurement Results for Parallax Induced Point of Aim (POA) Error:
  • Contrary to widely held belief, the EOTech EXPS3 holographic sight has about the same parallax induced POA error as compared to reflex red dots Trijicon Patrol MRO and Holosun 530-RD, which was surprising to learn.
  • The parallax induced POA error is between 3 MOA to 5 MOA for the EOTech and the two reflex red dots tested.
  • To see the measurement results and learn how the measurements were made, read on.
I hope some Hide members will find this useful. Please don’t shoot the messenger, the EOTech sights are awesome and many shooters love them including some of the most demanding expert military and LE operators. I did my level best to design and execute a basic scientific test for comparing red dot parallax error between different red dot models. It’s also pretty easy for others to repeat the test to see if others get similar results.

Introduction:

I recently purchased an EOTech EXPS3 with a flip-down magnifier because I thought it would have much less parallax induced POA error than my red dot sights. Two other motivations for trying the EXPS3 are that with holographic sights the center dot diameter does not increase in MOA size with magnification and the window size and FOV is larger as compared to most reflex red dot sights.

Parallax error in a CQC weapon is important in my view because shots are often taken under time pressure from highly improvised positions with a non-standard cheek weld or no cheek weld at all. The more forgiving the sight is with respect to where the dot is located in the window, the better. Holographic sights, including EOTech sights, are widely reported to have far less parallax error as compared to reflex red dot sights. Some of online and print sources even claim the EXPS3 sight is "parallax free".

This is the only reference I was able to find that has measured red dot sight parallax error results, and the results say that EOTech holographic sights are not parallax free but have significantly lower parallax error than most reflex red dots:

Parallax Induced POA Error Measurement Procedure:

The first thing I did when the EOTech arrived was to unbox and place the sight on a stable aiming platform with approximately 9.5" eye relief for an apples to apples comparison with (1) a Trijicon Patrol MRO (MRO-C-2200018) and (2) a Holosun 530-RD (HE530G-RD). The test procedure for each sight was to center the dot in the middle of the window while aiming it at a grid target with close grid spacing, then move my eye side to side by the same distance for each sight (+/- 0.5”) and up and down by the same distance for each sight (+/- 0.35”) and then record the dot movement in inches on the grid. The target was set up at 7 yards which was far enough away to get enough dot movement for a reasonably accurate estimation of POA shift on the grid, but not so far away so that the grid lines were hard to discern at 1x. The smaller vertical eye movement as compared to the horizontal eye movement was to account for the smaller vertical window dimension of the EOTech as compared to the horizontal window dimension. Although the Trijicon and Holosun are round which would allow the same vertical and horizontal eye movement, the vertical eye movement was limited for all three sights in order to maintain a consistent comparison. This test procedure is not very rigorous, but the results allow for a reasonable relative “ballpark comparison” of the three sights. The results are definitely “good enough” to determine whether the EOTech parallax error is clearly superior or about the same as the reflex sights.

The bottom line - The EOTech has pretty much the same parallax error as compared to the reflex red dots, which was somewhat surprising to learn.

Another interesting finding was that the Trijicon has the smallest horizontal POA error when the eye is moved in the horizontal direction, and the smallest vertical POA error when the eye is moved in the vertical direction, but there is a translation of horizontal eye movement to vertical POA error and a similar translation of vertical eye movement to horizontal POA error. I have noticed this in the field when using the MRO but this is the first time I measured it and it was surprising to find that the horizontal to vertical and vertical to horizontal translation errors were larger than the vertical to vertical and horizontal to horizontal errors.

Measured results in inches of error for parallax induced POA error at 7 yards distance from the front of the sight to the target:
  • Approximate EOTech EXPS3 POA error induced by +/- 0.5” horizontal eye movement: +/- 0.35” horizontal POA error, negligible if any vertical error.
  • Approximate EOTech EXPS3 POA error induced by +/- 0.35” vertical eye movement: +/- 0.2” vertical POA error, negligible if any horizontal POA error.

  • Approximate Holosun 530-RD POA error induced by +/- 0.5” horizontal eye movement: +/- 0.35” horizontal POA error, negligible if any vertical POA error
  • Approximate Holosun 530-RD POA error induced by +/- 0.35” vertical eye movement: +/- 0.25” vertical POA error, negligible if any horizontal POA error

  • Approximate Trijicon Patrol MRO POA error induced by +/- 0.5” horizontal eye movement: +/- 0.15” horizontal POA error, +/- 0.2” vertical POA error
  • Approximate Trijicon Patrol MRO POA error induced by +/- 0.35” vertical eye movement: +/- 0.1” vertical POA error, 0.2” horizontal POA error

While the above error measured in inches are small for a CQC engagement at 7 yards, when the errors are converted to MOA they are substantial for 100 to 300 yard engagement distances.

Measurement results in MOA for parallax induced POA error:
  • Approximate EOTech EXPS3 MOA error induced by +/- 0.5” horizontal eye movement: +/- 5.0 MOA horizontal POA error, negligible if any vertical POA error
  • Approximate EOTech EXPS3 MOA error induced by +/- 0.35” vertical eye movement: +/- 2.9 MOA vertical POA error, negligible if any horizontal POA error

  • Approximate Holosun 530-RD MOA error induced by +/- 0.5” horizontal eye movement: +/- 5.0 MOA horizontal POA error, negligible if any vertical POA error
  • Approximate Holosun 530-RD MOA error induced by +/- 0.35” vertical eye movement: +/- 3.6 MOA vertical POA error, negligible if any horizontal POA error

  • Approximate Trijicon Patrol MRO MOA error induced by +/- 0.5” horizontal eye movement: +/- 2.1 MOA horizontal POA error, +/- 2.9 MOA vertical POA error
  • Approximate Trijicon Patrol MRO MOA error induced by +/- 0.35” vertical eye movement: +/- 1.4 MOA vertical POA error, +/- 2.9 MOA horizontal POA error

Another interesting finding was that although the Trijicon sight exhibited horizontal/vertical translation errors in POA, the total POA error for a given amount of eye movement seemed to be a little less than the total error for the same amount of eye movement for the EOTech and Holosun sights. This makes me wonder if the Trijicon engineers designed a reflective surface shape to minimize total error at the expense of some translation error, or if this just happens to be how the design of the Trijicon reflective surface shape works. It is an individual shooter decision as to whether the translation in POA error from horizontal to vertical and vice versa is acceptable in exchange for a slightly smaller total POA error.

Take aways:
  • Based on these test findings, the reported EOTech EXPS3 improvement in parallax induced POA error as compared to some of the best red dots is not accurate. The EOTech parallax induced POA error is about the same as a good reflex red dot sight. I suspect, but do not know, that the same may be true for some of the other EOTech sights because this is one of EOTech’s most recently released models so it would be surprising if the parallax induced POA error is worse than the earlier models.
  • It is important to state the obvious. The bottom line for practical use of all red dots is that centering the dot in the sight window during both zeroing and shooting longer distances is very important for accuracy.
  • When using a flip-down magnifier with either a holographic sight or a reflex red dot sight the window sight picture and FOV is greatly reduced, which naturally forces the shooter to keep the aiming dot more toward the center of the sight window, but it is still important to center the dot. It is also good practice to zero with the magnifier because any POA MOA shift due to the magnifier being on and off will produce a larger error measured in inches or cm at distance under magnification if the sight is zeroed without magnification as compared to the error in inches or cm at close range under 1X power if the sight is zeroed with magnification.
  • Even though the parallax errors are about the same, the EOTech EXPS3 and other EOTech models have the other advantages over reflex red dots. These advantages include a large FOV window and the same size aiming dot under magnification. While some red dots have similar FOV window sizes as compared to the large window EOTech models, the reflex sight aiming dots expand under magnification. Therefore, if the shooter is careful to keep the aiming dot in the center of the window the EOTech models can still be more accurate than a reflex red dot at long range under magnification due to the higher resolution of the aiming dot.
  • For me though, the main attraction was better parallax error and I'm not willing to trade the extra weight, size, cost and much lower battery life as compared to the excellent large window reflex red dots that are available for what amounts to a smaller, more precise aiming dot when using a flip-down magnifier. The EXPS3 I bought is going back to the seller.
Notes:
I have been using the Trijicon Patrol MRO for about 10 years and although the same model number is still a popular option that is readily available, optic manufacturers sometimes update designs without advertising the fact so newer Patrol MROs might have internal design updates that could change the parallax error performance, I don’t know about this. The EOTech EXPS3 is brand new and I picked up the Holosun 530-RD about 6 months ago, so these should be the latest designs.

SOLD SOLD: Semi-Custom 6.5 PRC Rifle

Started this build earlier this year, but ended up putting it on hold to build a shorty 6.5 PRC. Finished this one and my shorty does everything I need so want to just sell this one. I am willing to part this out if it doesn’t sell complete, but I want to see if it sells first. I have $5,500.00 in it. Asking $4,500 shipped for the complete rifle, and I will include 2 Accurate Mag 3 round magazines if someone buys the complete rifle, which are worth about $60 each. There are 0 rounds through this build. Preferred built the barreled action. Chamber is 6.5 PRC Alpha Reamer with a 0.187” Freebore. Weight as it sits is 10lb 7.8oz, but scope setup is a chonk, if you went with rings and say a Razor LHT, you could shave about a pound I would think. Build details and price for parting out as follows:

Barreled Action:
Kelbly Atlas Tactical SA Magnum Bolt Face,
Preferred Barrel Blanks 24” 1:8t 50/50 Ni Plated / Non-Plated 6.5 PRC Carbon Wrapped Heavy Palma Barrel Hand Lapped, Area 419 Hellfire Match 6.5mm Muzzle Brake, Triggertech Primary Single Stage Trigger

$2,250.00 for BA w/ trigger and brake

Stock:
Manners Pro Hunter w/ Mini Chassis and M5 DBM and the DBM, ARCA Rail, and Bipod Mount are CERAKOTE OD Green, also with a Triad Stock Pack w/ accessories.

$1,250.00 w/ Stock Pack

Optic:
Burris XTR2 5-25 FDE Mil/Mil SCR, MPA BA One Piece 34mm X 1.060” Optic Mount w/ Level and Diving Board

$1,250.00 w/ Mount and Accessories

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Night Vision Trijicon REAP IR type 3 60mm

I have a REAP IR type 3 60mm I bought new from Kenzies a few months ago and it is just not well suited to the close in hog shooting I do. Great optic, just need something with more FOV. It'll come with everything that came with it from the factory as well as a Department of Techne Picatinny power pack carrier and Anker power supply that will run it most of the night. It has only been used with 5.56mm and 6mm ARC. It is in excellent shape. I am asking $5800 obo shipped. Zelle or Venmo. Not really looking for any trades.

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LA Times, Harris’s Hometown Paper, Refuses to Endorse Her.


Vice President Kamala Harris’s hometown paper, the Los Angeles Times, will not deliver a 2024 presidential endorsement.


The paper’s lack of an endorsement is a slight to Harris. The Times endorsed President Joe Biden in 2020, Hillary Clinton in 2016, and Barack Obama in 2012 and 2008.


The decision not to endorse Harris came from the paper’s owner, Dr. Patrick Soon-Shion, Semafor’s Max Tani reported Tuesday:


[A]ccording to two people familiar with the situation, executive editor Terry Tang told editorial board staff earlier this month that the paper would not be endorsing a candidate in the presidential election this cycle, a decision that came from the paper’s owner Dr. Patrick Soon-Shiong, a doctor who made his fortune in the healthcare industry.
The paper did not explain its decision, though it noted at the bottom of its online endorsement page that “the editorial board endorses selectively, choosing the most consequential races in which to make recommendations.”

It wouldn’t be the first time since he bought the paper in 2018 that owner Dr. Patrick Soon-Shiong had overruled the wishes of the paper’s editorial board. In 2020, the paper met with Democratic candidates for president for interviews with the intention of making a pick in the race. But after deciding to endorse Elizabeth Warren in the Democratic, at the last minute Soon-Shiong overruled its leadership and said there would be no endorsement in the primary race (the paper endorsed Joe Biden in the general election).

After Richard Nixon won reelection in 1972 and then resigned from the presidency in the wake of Watergate, the paper stopped endorsing candidates. Throughout Nixon’s career, the Times had backed the California Republican throughout his House, senate, and presidential campaigns. Its next endorsement came about 30 years later in 2008.

Firearms Staccato C2 w/ extras

I have a Staccato C2 with full kit that I'd like to sell. It came direct sale from Staccato. I carried it quite a bit, but probably only put 300 or so rounds through it. It features the DLC'd barrel and the DPO optics platform.

Comes with 6 16rnd mags, TLR7a light, four holsters, the original Staccato bag and accoutrements, and a DPO plate for an RMRcc

$1850 shipped to your FFL.

I will need to confirm that your FFL will accept shipment from an individual

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Firearms Items Listed on GunBroker

We have items list on GunBroker.com, we will not be posting all of them here so make sure to check us out on GunBroker.com.

Here are a few of our listings:
Ending Soon USED Heckler & Koch HK P7M8 9mm Squeeze Cocker 3 Mags, Original Box, and Holster

Check out our other items listed on Gun Broker:
NEW MDRx Chassis, Forward-Ejection FDE
NEW MDRx Chassis, Forward-Ejection California FDE
(we have MDRx Conversion Kit, 65CM 20" 10rd Forward-Ejection)
NEW Rock Island VR80-CA Shotgun
NEW Radical Firearms 16" 5.56 NATO Rifle with 15" RPR CA COMPLIANT
NEW Springfield XD 40

Optics Optics for Sale! Tangent, USO, Vortex, Leupold, Zeiss, HORUS! (Post Edited)

All NIB.
One of the USOs has a custom paint job so it has been taken out of the box just for the single picture. Shipping + insurance is up to the buyer.

Scopes are as follows:
Leupold Mk5HD 5-25 w/PR1 reticle: $1700
Vortex Gen 2 Razor 4.5-27 w EBR-7C reticle: SOLD
Zeiss S3 425-50 ZF-MRI: $1800
USO FDN 25 JVCR Reticle (non custom paint job): $1800 SOLD
USO FDN 25 JVCR Reticle (custom paint job): $1900 SOLD
Tangent Theta 5-25 w/ JTAC Reticle: $4900/ea SOLD
Horus scope : SOLD ($750 if you want the weather meter and range finder with it)

EDIT: For those asking-- No, I haven't used snipershide in years. I have bought and sold tons of stuff on here, but nothing anytime recently. I'm selling this (and all the other stuff I posted) at the prices I have them listed at to move them quickly. I got beyond hosed by insurance on my truck [insurance wants to pay 14k to put my truck at a value of 17k (frame damage) when it was 35-40k before the accident] so I'm looking to offload these for cash-- not trades. Without this issue these would not be posted.
If you have questions I'm happy to answer them.




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SOLD Gold TiN coated Terminus Zeus SA QC NIB

For sale is a brand new Terminus Zeus right hand, short action quick-change 308 bolt face receiver. It is one of 35 with TiN coating from Terminus. Still at FFL, never transferred. $1650 shipped to your FFL.

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