SIG SAUER MCX SPEAR LT PART 1- OVERVIEW AND BUILDOUT

I do an overview of the Spear LT carbine in 5.56 and build it out to my preference and usecase. Join me for a lengthy discussion and my equipment choices for this build.

00:00 – Intro
0:01:19 – Spear LT discussion and origins
0:09:34 – Discuss potential barrel/handguard flex issues
0:11:06 – Begin field strip
0:12:48 – Remove handguard
0:16:20 – Loosen and then torque barrel retention screws
0:24:20 – Torque handguard retention screws
0:25:00 – Discuss removal of muzzle device
0:25:30 – Test barrel/handguard flex
0:27:20 – Complete barrel cartridge removal
0:29:00 – Arisaka zero retention clamp (not installed due to no instructions on hand)
0:38:58 – Lube, and reassemble bolt group/recoil assembly into receiver
0:42:18 – Begin optic and accessories installation
0:43:00 – Eotech EXPS0-1 and G33 Magnifier unbox
0:43:30 – Unity Tactical FAST riser and Omni FTC unbox
0:46:59 – Iron sights installation
0:57:30 – Magnifier mount and irons conflict
0:58:58 – WML installation attempt but mount is missing so it is omitted for now
1:00:50 – Vertical grip install
1:08:50 – Sig cheek riser upgrade which isn’t one because I bought an identical to stock
1:10:35 – Sling QD cup installation
1:14:39 – Weight comparison with LWRC IC-A5 SBR
1:16:15 – Sig AR stock adapter test

Some of the items used on this build: (not sponsored)

Optic and Mount package bundle from WeaponOutfitters.com
ZZZ02910-EOT00609-EOT00598-UTL02453-UTL02445 Optic and Magnifiers with Riser BundlesUTL02453 Unity Tactical FAST Riser – Flat Dark Earth
UTL02445 Unity Tactical FAST-OMNI FTC Magnifier Mount – Flat Dark Earth
EOT00609 EOTech Holographic Weapon Sight – EXPS3-0 – Tan
EOT00598 EOTech Magnifier – G33 – Tan

Surefire Scout Light Setup (not shown in this video, but eventually added to build)
AMC02798 Arson Machine Co. Inline Scout Mount – M-LOK
SUR02288 Surefire DS00 Waterproof Switch Assembly – Surefire Scout Weapon Light Tailcap – Tan
MOD01317 Modlite Modbutton Lite Remote Switch (Surefire or Laser)
AMC00152 Arson Machine Co. M-LOK WireGuide System

Sig Sauer Parts and Accessories direct from Sig:
TAPER CAP, 5.56 BARRELS, 1/2-28 THREAD
SIG SAUER Stock Adapter Low Profile Tube – 1913 Folding
MCX/MPX SKELETONIZED STOCK RISER

Arisaka Parts:
ZRC-SPEAR-LT – MCX Zero Retention Clamp (Handguard: Spear LT Standard Handguard)