This video has a lot of outdated and incorrect information. I have posted an update video to correct these mistakes, as well as present additional details:
   • QBZ191  Update / Deep dive [CHECK PI...  

TABLE OF CONTENTS:
0:00 Intro
0:56 Disclaimer
1:23 General information
2:13 Ammunition
3:30 Designation
4:00 Upper & Lower receivers
4:19 Fire selector
4:46 Bolt release
5:02 Charging handle
5:14 Magazine catch
5:32 Handguard Rifle & Carbine
7:02 Handguard DMR
7:33 Rear sight
8:21 Stock
8:58 Bolt carrier
9:28 Bolt
11:02 Gas system
12:46 Fire control group
14:48 Magazines
18:12 Optics
21:26 Laser & Illuminator
21:43 Vertical forgrips
22:47 Suppressor
22:57 Conclusions
================================
SOURCES:
* Citations are on the bottom left of the video *
[1]    • China 70th anniversary parade and cel...  
[2] https://www.sinodefenceforum.com/t/qb...
[3]    • 《经济半小时》 “轻”装上阵的秘密 20191030 | CCTV财经  
[4] https://www.thefirearmblog.com/blog/2...
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[6]   / 1  
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[8] https://en.wikipedia.org/wiki/5.8%C3%...
[9] http://pewpewpew.work/china/rifle/qbz...
[10] http://pewpewpew.work/ammo/58x42/58mm...
[11]    • 《超级武器II》第四集 隔屏震撼重机枪的强大火力为步兵冲锋陷阵抢占先机【...  
[12] https://www.thefirearmblog.com/blog/2...
[13]    • 《超级武器II》第六集 子弹的真实威力到底有多恐怖慢镜头之下结果出人意料...  
[14]    • 《超级武器II》第八集 揭密狙击手的“眼睛”狙击步枪瞄准镜究竟暗藏多少玄...  
[15]    • QJB95 NoRecoil Light Machine Gun(Li...  
[16]    • 最受关注也备受争议中国95式自动步枪全面解析 众多细节抢先公开「军武零...  
[17] https://www.shiguangchaguan.com/xuagl...
[18]    • 【2019新枪】阅兵步枪 Norinco QBZ191 China 20...  
[19] https://www.sinodefenceforum.com/t/qb...
[20] https://news.ifeng.com/c/80jFCK7gXM8
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[22] https://www.gunvaluesboard.com/ihave...
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[24] https://www.gunsholstersandgear.com/g...
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[29]    • AR15 firing in Slow Motion  
[30] http://abesguncave.com/thebestar15...
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[32] https://www.sinodefenceforum.com/t/qb...
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[54] https://www.midwayusa.com/product/101...