Common Questions

Step 1: Find the yellow wallet at the bottom of the website and click it to open the wallet to show your points. Slide to determine how many points you want to use. Step 2: Click the claim now in blue to get your code for that order. Step 3: You can copy and paste the code for the discount. Step

Whats the main difference between the EP5 and SH4 scopes?

We back all of our products with a Lifetime Guarantee. If an ARKEN OPTICS product doesn't perform, we will take care of it! We only hope that you give us the chance to make good. We appreciate your business and we want to keep it. We believe in superior quality and craftsmanship, and we are confiden

Contact info@arkenopticsusa.com Our team will determine the correct course of action and get you taken care of as quickly as possible. All replacements are processed ahead of existing orders.

***Each scope comes packaged with*** Bikini lens cover Lens cloth Allen wrench Manual Additional items may be included based on items ordered or promotional events.

EPR (Extreme Precision Reticle): The top portion of this reticle is designed to range an average adult male: 5'9" tall and 19.5" wide at the shoulders. Each number above a chevron indicates distance in yrds. Ex. With feet on center aim point, the top of the head would touch the apex of the '3' chev

All of our scopes are rated to handle up to 50 BMG, as well as air rifles.

We do not have a broad discount program in place but we do price our optics at the best price we can offer for everyone, everyday. We do however, provide special pricing to mil/leo for 'official use' purposes. We require notice on Dep. letterhead acknowledging/approving product acquisition/use. Inqu

Hey professionals,I’m upgrading a facility’s fire alarm and signaling systems and want to follow the best standard. Came across NFPA 72 here: https://kukubooks.com/product/nfpa-72/. Is this the go-to for modern emergency comms, detectors, and compliance? Does it provide clear direction for design an

NFPA 72 sets detailed requirements for the selection, installation, performance, and maintenance of smoke and heat detectors to ensure reliable fire detection. It specifies detector placement based on occupancy type, ceiling height, and environmental conditions to maximize early fire detection and

Hey everyone, I’ve been managing boiler systems for a few years now, and I wanted to share something that might help others working in similar environments—especially if you’re responsible for fuel-burning equipment, utility boilers, or burner management. Recently, I got the NFPA 85: Boiler and Comb

According to NFPA 80A, the key difference between a fire damper and a smoke damper lies in their function and purpose within building protection systems: • A fire damper is designed to prevent the spread of flame and heat through ductwork that penetrates fire-rated barriers (such as walls and floor

I mounted it on my ar-15 with Arken Optics Rigid Precision Scope Mount 20 MOA. I backed out the zero stop screws and turned the torrent all the way down. It is about 5' high on the 100 yard target? Any help would be appreciated.

I just go my first Arken scope and love it, but it's missing a logo battery cover. I didnt even notice it right away until I looked at the scope pictures online and noticed my battery cover doesn't have the Arken logo. I purchased the EPL4 6x24x50. How can I get a replacement battery cover with t

How many MOA are there from center dot to the bottom of donut to the 200 yd dot, 300 yd dot to the 400 and so on??

My EP5 5/25 works well, but the parallax settings are completely out to lunch. For example, at a 1000 yard target a careful parallax adjustment (not merely sharp focus) shows about 175 yards on the scale. Anyone else seeing this or is mine defective??? Thanks!

After you have added everything to your cart that is required for the code. You would click the redeem your coupon in blue letters. This will open a box for you to type the code in, then click the apply button. The following screen will show your discount applied to your order. Thank you for your

***These recommendations should be used as a guide and may not fit all applications (Based on 50mm Objective lens contacting barrel/AR forends). There are several easy to find ring height calculators available online. *** Rem 700 footprints = low rings (0.92") (up to 40 MOA scope rail) Ruger RP

AZS set screw: M4*5 AZS screw: M4*12

Orders may be changed at any time prior to ship date. We will refund upon request at any time prior to ship date. (https://arkenopticsusa.com/pages/returns) To ensure quality of service, please title email request appropriately: Send request to: info@arkenopticsusa.com

We do not sell/ship outside of the US (dealers or customers). We will remain focused on providing products within the US until we can fill the demand. Official foreign dealers may be opened at a later date.

We have closed dealer registration for the time being.

Hi all,We’re updating our hot work safety procedures and looking into NFPA 51B. Found the latest edition here: . Has anyone here used it recently for permit systems, fire watches, and safety zones? Wondering if it’s detailed enough for daily operations and training. Would love to hear your experienc

NFPA 72 sets comprehensive requirements for notification appliances, which include audible, visible, textual, and tactile alerts used to notify occupants of a fire or emergency. Key requirements include: 1. Audibility:Audible alarms (e.g., horns, sirens) must produce a sound level at least 15 dB a

NFPA 72 defines several types of fire alarm systems to suit various applications and building needs: 1. Manual Fire Alarm System: Activated manually by occupants, typically through pull stations. It does not have automatic detection components. 2. Automatic Fire Alarm System: Detects fire conditio

NFPA 72, also known as the National Fire Alarm and Signaling Code, establishes the minimum requirements for the installation, performance, inspection, testing, and maintenance of fire alarm systems and emergency communication systems. Its scope covers fire detection, notification appliances, emer

Just ordered direct from Arken, and I don't recall seeing a lead time...

How are you? Just wanted to know if there was any talks of there being a MIL Reticle option for the EP-8? Thanks.

Order A-KNIUQ . I ordered this optic on Apr. 2nd. Today is May 2nd. Website states 2-3 week lead time. It’s been a month and my order still says “awaiting processing”. I gotta ask where is my optic?

To whom it may concern my name is Rushie Solomon and I purchased a scope from your company. It's been 2 weeks and I have not received any information or emails on when should I receive the scope. The experience from this company have not pleasant for me. I am trying to figure out if this company is