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| Ozark Armament Flip Up Iron Sights, Amazon Online Product Page. Earliest Publication Date: May 22, 2017. Date Accessed: May 1, 2023. Retrieved from Internet URL: https://www.amazon.com/ar-15-iron-sight-ozark/dp/B071746KSB (Year: 2017). |
| Midwest Industries Combat Rifle Sights, YouTube-Midwest Industries Inc. Publication Date: Sep. 27, 2018. Date Accessed: May 1, 2023. Retrieved from YouTube URL: https://www.youtube.com/watch?v=wb6hc9O_KYk&t=3s (Year: 2018). |
| Leapers, Inc. UTG 400 Lumen Everyday Defense LED L-light downloaded from https://www.leapers.com/index.php?act=prod_detail&midx=988&allids=988&itemno=LT-EL223HL-A on Nov. 27, 2017. |
| Leapers, Inc. UTG New Gen 400 Lumen Compact Grip Light with QD Mount downloaded from https://www.leapers.com/index.php?act=prod_detail&midx=988&allids=988&itemno=MNT-EL223GPQ-A on Nov. 27, 2017. |
| Leapers, Inc. UTG New Gen 400 Lumen Grip Light with QD Mounting Base downloaded from https://www.leapers.com/index.php?act=prod_detail&midx=988&allids=988&itemno=MNT-EL228GPQ-A on Nov. 27, 2017. |
| Leapers, Inc. UTG Flashlights and Lasers downloaded from https://www.leapers.com/index.php?act=listproduct&midx=988&allids=988&svroot=MOUNTING%20SYSTEMS on Nov. 27, 2017. |
| Leapers, Inc. UTG Mounting Systems downloaded from https://www.leapers.com/index.php?act=listproduct&midx=923&allids=918_919_923&svroot=MOUNTING%20SYSTEMS on Nov. 27, 2017. |
| Leapers, Inc. UTG 4.1″ Lowpro Combat Quality QD Lever Mount Metal Foregrip downloaded from https://www.leapers.com/index.php?act=prod_detail&itemno=MNT-GRP001SQ&midx=1002&allids=1001_1002 on Nov. 27, 2017. |
| Leapers, Inc. UTG Model 4 Low Profile Flip-up Front Sight MNT-755 dowloaded from https://www.tacticalwholesalers.com/Leapers-Inc-Model-4-Low-Profile-Flip-up-Front-Sight-MNT-755_p_143421.html?gclid=EAlalQobChMIIYywtYT21wIVB57ACh1IDwmuEAYYAyABEgKbX_D_BwE on Dec. 6, 2017. |
| Magpul, MBUS Front & Rear Sight Set downloaded from http://www.tomstactical.com/Magpul-MBUS-Gen-II-Front-Rear-Sight-Set-Black_p_74.html on Jan. 5, 2018. |
| LWRC International, LWRCI Skirmish Sight Set downloaded from https://www.lwrci.com/p-451-day-9-lwrci-skirmish-sight-set.aspx on Jan. 5, 2018. |
| Diamondhead, Polymer Diamond Integrated Sighting System (with NiteBrite) downloaded from https://www.diamondhead-usa.com/products/polymer-diamond-integrated-sighting-system-with-nitebrite on Jan. 5, 2018. |
| Precision Reflex Inc., Flip up Front and Rear Sight Package downloaded from https://www.lapolicegear.com/preflex-flip-up-sight-combo.html on Jan. 5, 2018. |
| Magpul, MBUS Pro Offset Sight—Front downloaded from https://www.magpul.com/products/mbus-pro-offset-sight-front on Jan. 5, 2018. |
| Troy Industries, Offset Sight Set, M4 Front and Dioptic Rear—FDE downloaded from https://troyind.com/products/offset-sight-set-m4-front-and-dioptic-rear-fde on Jan. 5, 2018. |
| HQ Issue, HQ Issue 45° Offset Sight Set downloaded from https://www.sportsmansguide.com/product/index/hq-issue-45deg-offset-sight-set?a=1781389 on Jan. 5, 2018. |
| Dagger Defense, Dagger Defense flip up BUIS 45 degree picatinny rail mounted backup iron sights downloaded from https://daggerdefense.com/?product=dagger-defense-flip-buis-45-degree-picatinny-rail-mounted-backup-iron-sights on Jan. 5, 2018. |