The 518™ HWS offers multiple brightness settings offering quick adjustability to accommodate any shooting situation.
- HWS 518™
- Quick-Start Guide
- Warranty Card
- 2x AA Alkaline Batteries
Shipping Estimate
USA
- USA
- CAN
- USA
- CAN
Ships within 48 hours · Estimated delivery Jul 15 - Jul 20
Promo Codes Available:
For Your Every Summer RSVP, with Code: SUMMER15
Description
HWS 518™With the HWS 518, the best just got better. Get all of the features found in EOTECHs top sight, the EXPS, but with easy to find AA batteries. The 518 has buttons on the side that allow the user to position it close to the magnifier to reduce rail space This Product is subject to ITAR EAR Export Controls. Please visit our ITAR EAR page (click here) or Contact Us for more Information. TECHNICAL SPECIFICATIONS: L x W x H: 5. 6" x 2" x 2. 9" (142. 2 x 55.
With the HWS 518™, the best just got better. Get all of the features found in EOTECH’s top sight, the EXPS, but with easy-to-find AA batteries. The 518 has buttons on the side that allow the user to position it close to the magnifier to reduce rail space
This Product is subject to ITAR/EAR Export Controls. Please visit our ITAR/EAR page (click here) or Contact Us for more Information.
TECHNICAL SPECIFICATIONS:
- L x W x H: 5.6" x 2" x 2.9" (142.2 x 55.9 x 73.7 mm)
- Weight: 13.8 oz (391.2 g)
- Water Resistant: 10 ft (3 m) depth
- Mount: 1" Weaver or MIL-STD-1913 rail
- Windage & Elevation Adjustment: 0.5 MOA per click
- Brightness: 20 daylight settings
- Power Source: 2 x 1.5 V AA batteries (lithium / alkaline / rechargeable)
- Battery Life: 2,500 hrs (lithium) / 2,200 hrs (alkaline) @ setting 12, room temp
- Operating Temperature: -40°F to 140°F / -40°C to 60°C
- Country of Origin: Made in USA
RETICLE SPECIFICATIONS:
EOTECH’s unique reticle patterns are a critical to delivering fast target acquisition and MOA accuracy at any range. EOTECH reticles feature a 68 MOA ring surrounding a 1 MOA center dot allowing the shooter to quickly pick up and lock on a target.
EOTECH One Dot Reticle
Our most popular reticle offered, the 68 MOA ring with 1 MOA dot provides three usable aiming points. The aiming points above are based on the following load: .223 cal. 62 gr. 2,900 vel. When using other loads and calibers, the operator will have to establish the ranges associated with the aiming points. When using a shotgun, the 68 MOA ring can be used to represent shot patterns but will vary based on choke and shell selection. For ordering this reticle, the model codes will end in -0.
RANGE ESTIMATION WITH UNMAGNIFIED HWS
The standard ring found in most reticles equates to approximately 68" (5'8") at 100 yards.
BRIGHTNESS OPTIONS:
All EOTECH Product are designed to give many years of trouble-free performance and reliability. Nonetheless, failures do sometimes occur even with equipment as well-built as EOTECH’s. Therefore, please read the Warranty information below carefully, because it contains important information, which in the event of such a failure, may be very helpful to you.
If after reading EOTECH’s Warranty thoroughly and you have any questions, please do not hesitate to contact EOTECH directly.
Please also note, that if your Product ever does require Warranty service, obtaining such service will be much easier if you have read the Warranty that applies to your product and have completed the Product Registration.
Shipping Notes
- Free Standard Shipping on $100+ Orders to the USA.
- Except Preorder products are shipped in 48 hours.
- Delivery to the USA:
- Standard Shipping : 3-10 business days
- If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
- We offer a 30-day return/exchange service after receiving.
- Final sale items are not eligible for returns or exchanges.
- To process your return/exchange, please contact us at [email protected]
- Please click here for more details>>> Return & Exchange Policy
4.8 ★★★★★
Based on 1053 reviews
Sort
Product Reviews
★★★★★ 5
Amazing - Stop Scrolling and Buy This Pillow
Size: Queen (Pack of 1), Color: White
I have been an Amazon customer ever since the very beginning, and this is my first review. Not because I haven’t purchased tons of amazing things (and a few bad ones), just never felt the need.
However, I researched pillows for longer than I care to admit, and decided on this one.
I’ve had it for about six months and absolutely love it. No lie, I genuinely look forward lying my big head on it after a long day.
I am a side sleeper, but flip flop all around through the night and it’s great in every position.
Pros:
Stays nice and cool, which is soothing regardless of the time of year.
Has a sort of quilted textured pattern on the zip up cover, gives it a luxury feel, that breaths nicely even when a pillow case is added.
The fill is fully adjustable to your preference.
I knew it came with extra filling but was worried it would not be enough. Wrong. It was very full and I ended up taking some out until it was perfect.
It comes vacuum sealed and suggests it may take some time to fully take shape. However, I found it to be about 90% almost instantly and was sleeping on it a couple hours later.
There was no unpleasant scent sometimes associated with memory foam items.
The foam itself is very nice, a mix of what appears to be shredded and cotton candy cloud like. Very brilliant idea, as it is somehow supportive, soft and firm all at once.
The affordability of this pillow compared to some of the others in this category can’t be overstated.
Oh, and the packaging was very thoughtfully and securely done.
If you are like me, an over thinker, I would suggest just taking this for a spin. It’s amazing.
I’m not a bot, or working for the company. I’m just truly satisfied, love this pillow, and have been sleeping great.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on April 6, 2026
★★★★★ 5
It's the perfect pillow!
Size: Queen (Pack of 1), Color: White
I purchased this pillow specifically for its customizable fill feature, which allows you to add or remove stuffing to suit your personal comfort needs. Due to the unique curvature of my cervical spine—forward at the neck rather than backward—I require a soft, semi-flat pillow rather than one that is thick or firm. Additionally, I often experience ear discomfort by morning, so a gentler surface is essential.
Upon adjusting the fill, I was pleasantly surprised by the generous amount of stuffing included. There was enough to fill an additional pillowcase, and I estimate it could easily create four to five more pillows. The ability to modify the pillow’s firmness at any time is an outstanding feature that makes it adaptable for a wide range of preferences and sleep styles.
This pillow has exceeded my expectations in both comfort and versatility. I highly recommend it to anyone seeking a personalized sleep experience.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on February 1, 2026
★★★★★ 4
Good quality pillows overall
Size: King (Pack of 2), Color: White
Got a set of these for my wife and myself as we were struggling with our old pillows. These have some really good qualities and some things we'd like to see changed.
First, the good: These are look and feel like they are high quality and made with good materials. The foam itself has a very nice feel to it. We love the fact they are adjustable to add or remove foam. They come with a pretty substantial amount already in the pillow. We appreciate the CertiPur certification.
Now the improvements or changes we'd like to see: The foam, while feeling great, doesn't bounce back well if you scrunch your pillows, and so every day you have to fluff and reshape the pillow, moreso than some other memory foam pillows we've owned. One side of the pillow is cooled and you can feel that even through the pillow case, and that's a great thing. However, one side is not cooled and we'd have preferred if both sides were made of the cooling material.
Overall, these are good pillows and we are not disappointed with the purchase. They are not, however, our perfect pillows (which do seem hard to find), and at some point in the future will probably make their way to the guest bedroom. We would rate them as some of the better pillows we've tried and feel most people would probably like them.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on December 19, 2025
★★★★★ 5
Perfect Pillow
Size: Queen (Pack of 1), Color: White
These are the best pillows ever. You can adjust the firmness or softness to whatever you want. For years i used a soft latex pillow , which you cant get anymore. I will never use another pillow. I have purchased 6 of these after the first one. You pick your own comfort level. Best ever. No more neck aches.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 17, 2026
★★★★★ 5
Hallelujah… finally, I found the right pillow!!!
Size: Queen (Pack of 1), Color: White
I have spent a lot of money searching for the right pillow. I recently tried to Tempur-pedic that cost twice with this pillow cost. Tempur-pedic flattened out. I’ve had this pill for a few weeks now and it works wonders. I am a paraplegic. You can have a lot of neck problems. I love the fact that this pillow is adjustable. I immediately saw it was too stuffy and took a bunch out. It works perfect so glad I didn’t spend money on a $200 purple pillow.
I read a lot of reviews and there were a lot of complaints about the odor. Mine did smell funny when it came out of the box. I immediately threw it in the dryer with a few bounce fabric sheets came out smelling fine.
Pillows are a very individual thing, but I think for 40 bucks this pillow is worth a try. I’m really enjoying mine about one of those silk pillowcases to go over it and it sleeps cool and comfortable. Best wishes in your search for the right pillow.
Update: I’ve been using this pillow several months and it continues. Give me a good night rest pain-free.. well worth the money.
UPDATE: I have been using this pillow for three months and it still works great. It does not flat out or get hot..
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on January 29, 2026
recommand products
Tothemoon ☾ - Baby shorts - Organic cotton - Light grey
14.95
Stirling Engine Kit Exterior Combustion Engine Enhanced Education Model DIY Steam STEM Toys
48.99
Personalized Quatrefoil Interlocking Square Wooden Monogram
25.00
Stirling Engine Kit Model Single-cylinder Split Right Angle Type High-end Creative Gifts for Collection
126.99
Golf Gift Desktop Jade-Gloss Resin Ornament
180.00