Upgrading the S&W M&P10

In this video, we take the Smith and Wesson M&P10 .308 from our previous baseline range test and fully upgrade it from tip to butt. This is the budget large frame AR that surprised us in stock form, and now we are turning it into a more capable AR-10 style .308 rifle with better furniture, a free float handguard, improved trigger, and a suppressor-ready muzzle device. We start by clearing the rifle and stripping the factory parts. On the lower, we install the Brownells exclusive Geissele G2SE trigger, swap the end plate for a Midwest Industries QD end plate, properly stake the castle nut, and add OD green furniture including the Die Free Co Kung Fu grip and a Magpul DT stock. On the upper, we remove the factory barrel nut and gas block, clean and re-grease the barrel extension, torque on the Midwest Industries barrel nut, and install a BCM steel low profile gas block and a Midwest Industries free float M-LOK handguard sized correctly for the low profile receiver height. To finish the build, we add Midwest Industries iron sights, a SureFire three prong flash hider with Rocksett and shims for suppressor use, an ambidextrous Breek Warhammer charging handle, rail covers, a bipod, a Die Free Co Tiger Claw hand stop, and we mount a Trijicon Credo 1-8 as the optic. Then we head back to Big Springs and run the rifle from 100 yards out to 500 yards in heavy, unpredictable wind to see what changed. Chapters: 00:00 Intro and 500 yard teaser 00:08 Recap of the stock M&P10 baseline 00:56 Safety check and clear the rifle 01:29 Remove factory stock 02:07 Separate upper and lower, tight takedown pins 03:43 Remove factory grip, retain springs and detents 05:06 Remove factory trigger group 06:35 Buffer and spring removal for end plate swap 07:03 Factory staking check and castle nut work 07:47 Secure lower in vise block and remove receiver extension 09:09 Install Midwest Industries QD end plate 10:07 Stake the castle nut 13:05 Install Brownells exclusive Geissele G2SE trigger 15:14 Ambi bolt catch interference and fix 19:41 Install Die Free Co Kung Fu grip and plug 23:11 Install Magpul DT stock and adjust dual tension lock 24:58 Upper receiver setup and tool selection 27:30 Remove factory handguard 28:24 Remove muzzle device, gas block, and barrel nut 30:39 Clean barrel extension and apply Action Lube Plus 33:04 Large frame AR high vs low rail explanation 32:51 Install Midwest Industries barrel nut and torque spec 37:52 Install BCM steel low profile gas block and gas tube 40:27 Install and align Midwest Industries free float handguard 43:11 Install SureFire flash hider with shims and Rocksett 44:50 Install Midwest Industries iron sights 50:19 Install Breek Warhammer ambidextrous charging handle 51:36 Add Tiger Claw hand stop, bipod, rail covers, suppressor 57:32 Mount optic and set QD tension 58:40 Range test from 100 to 500 yards 1:01:19 Results and wrap up