QBZ191 - Update / Deep dive [CHECK PINNED COMMENT FOR UPDATES]

I highly recommend that you watch my previous QBZ191 video first, before watching this one. Previous video:    • A comprehensive look at the QBZ 191 small ...   TABLE OF CONTENTS: 0:00 - INTRODUCTION 1:07 - DISCLAIMERS 1:53 - 1. CORRECTION OF MINOR MISTAKES AND ADDITIONAL DETAILS 2:02 - 1a. Designations 2:25 - 1b. Muzzle devices 2:43 - 1c. Bolt release 3:09 - 1d. Magazine release 3:19 - 1e. Magazine 4:01 - 1f. QMK171A scope 5:20 - 1g. DMR scope 6:34 - 1h. IR5118 thermal scope 7:21 - 1k. Cleaning kit 8:01 - 1l. Round counter 8:22 - 1m. Vertical foregrip 8:51 - 2. PATENT DOCUMENTS 9:13 - 2a. Front sight 10:08 - 2b. Rear sight 11:38 - 2c. Handguard reinforcement sleeve (Rifle & Carbine) 13:12 - 2d. DMR Handguard 13:49 - 2e. Gas system overview 14:15 - 2f. Single-port gas block 16:34 - 2g. Dual-port gas block 18:00 - 2h. DMR gas block 18:35 - 2k. Firing pin retaining pin 20:49 - 2l. Bolt carrier 21:14 - 2m. Anti pre-engagement mechanism 23:38 - 2n. Elongated cam slot 24:55 - 2o. Dual oblique extractor springs 26:27 - 2p. Extractor pin 26:57 - 2q. Bolt head 27:38 - 2r. Fire control group 31:51 - CONCLUSIONS SOURCE LIST: [1] https://www.bilibili.com/video/BV1rb4... [2] https://www.sinodefenceforum.com/t/qb... [3] https://www.patentguru.com/cn/CN21077... [4] https://www.patentguru.com/cn/CN11332... [5] https://www.patentguru.com/cn/CN11142... [6] https://www.patentguru.com/cn/CN21053... [7] https://weibo.com/tv/show/1034:466660... [8] https://www.bilibili.com/video/BV1MD4... [9] https://www.sinodefenceforum.com/t/qb... [10] https://www.sinodefenceforum.com/t/qb... [11] https://www.sinodefenceforum.com/t/qb... [12] https://www.sinodefenceforum.com/t/qb... [13]    • 《经济半小时》 “轻”装上阵的秘密 20191030 | CCTV财经   [14] https://www.sinodefenceforum.com/t/qb... [15] https://www.sinodefenceforum.com/t/qb... [16] https://www.sinodefenceforum.com/t/qb... [17] https://www.patentguru.com/CN305949531S [18] http://pewpewpew.work/china/rifle/qbz... [19] https://ddlaser.tezhongzhuangbei.com/... [20] https://www.sinodefenceforum.com/t/pl... [21] https://www.sinodefenceforum.com/t/qb... [22] https://www.sinodefenceforum.com/t/pl... [23] https://weibo.com/p/1005056440621917/... [24] https://www.sinodefenceforum.com/t/qb... [26] My Dress-up Darling – Season 1 Episode 2 [27] https://www.patentguru.com/cn/CN20884... [28] https://www.sinodefenceforum.com/t/qb... [29] http://pewpewpew.work/china/sr/qbu88/... [30] http://gearkr.com/?p=60121 [31] https://www.bilibili.com/video/BV1EA4... [32] https://www.springfield-armory.com/he... [33] https://tv.cctv.com/2021/10/23/VIDEti... [34]    • New Springfield Armory Hellion : VHS 2 Bul...   [35] https://wantubizhi.com/pic/95-1%E7%9E... [36] https://www.sinodefenceforum.com/t/qb... [37] https://www.bilibili.com/video/BV1rf4... [38] https://www.sinodefenceforum.com/t/qb... [39] http://pewpewpew.work/china/rifle/qbz... [40] https://www.patentguru.com/cn/CN10732... [41] https://www.patentguru.com/cn/CN20713... [42] World of Guns [43] https://www.thefirearmblog.com/blog/2... [44]   / 1421046463459647498   [45] https://www.thefirearmblog.com/blog/2... [46]    • Enhanced AR/M16/M4 Bolts and Bolt Carriers...   [47] https://www.patentguru.com/US20220110... [48] https://www.sinodefenceforum.com/t/pl... [49] https://www.patentguru.com/cn/CN20828... [50]    • How an AK 47 works   [51] https://www.thefirearmblog.com/blog/2... [52] https://www.recoilweb.com/cz-bren-805... [53]    • 【2019新枪】阅兵步枪 Norinco QBZ-191 China 2019 re...   [54]    • SCP Containment Breach Femur Breaker Sounds   [55] https://www.thefirearmblog.com/blog/2... [56] https://www.thefirearmblog.com/blog/2... [57] https://www.bilibili.com/video/BV1Fb4... [58] https://m.weibo.cn/detail/47050390443...