Learn how to install AT3’s best-selling M-LOK handguard in this step-by-step video!
The SPEAR requires no timing for the barrel nut, making upgrades or new AR15 builds simple. We’ll also show you how to pin your gas block to your gas tube, without the need for a jig.
*AT3 Tactical Available @ Amazon*
*New Monthly Giveaways & AT3 Tactical Videos* (No Firearms Sales)
*Ultimate AR-15 Beginner’s Guide*
*Complete AR-10 Builder’s Guide*
Follow along and comment below if you have questions – we’re happy to help!
Quick Text Instructions:
1. Secure upper receiver with AR15 vise block. Remove
muzzle device, gas block with gas tube, and barrel nut.
2. Install the barrel nut and apply 30-60 ft-lbs of torque
using the provided barrel nut wrench and a torque
wrench. Reinstall your gas block and tube.
3. Slide your handguard over the barrel and barrel nut
and align top rail with upper receiver.
4. Insert socket head screws from the left hand side of
the receiver, tightening with the 5/32 Hex Key. Torque
to 40 inch-lbs, or 1/2 turn past hand tight. Use the long
end of the 5/32 Hex Key for proper leverage.
5. Insert set screws from the bottom of the handguard,
and tighten with 5/64 Hex Key until they bottom out on
the barrel nut.
6. Your handguard is installed! Install your muzzle
device and reassemble your firearm.
Complete Parts List:
AT3 SPEAR M-LOK Handguard, 12″, FDE Cerakote
Ballistic Advantage 16″ Black Nitride M4 Profile Barrel, 5.56 NATO
Aero Precision Forged Upper Receiver
AT3 .750″ Diameter Low Profile Gas Block
AT3 Carbine Length Gas Tube
AT3 Combat Flash Hider with Crush Washer
AT3 Black Nitride 5.56 NATO Bolt Carrier Group
Radian Raptor LT Charging Handle, FDE
Tools We Used:
Bench Vise
Magpul BEV Block
Wheeler FAT Wrench
Loctite 242 Thread Locker
5/64″ Roll Pin Punch
Adjustable 1/2″ Drive Torque Wrench (Ft-Lbs)
1/2″ Drive Breaker Bar
Needle-Nose Pliers
Tongue-and-Groove Pliers
Allen Wrenches
———————————————————————————————-
✦✦✦ Enjoy the video? SUBSCRIBE NOW ✦✦✦
CONNECT TO OUR SOCIAL MEDIA CHANNELS:
Facebook:
Twitter:
Instagram:
Blog:
shout out to the Real Avid Lug Lok AR-15 Upper Vise Block which gives you plenty of capability against an over-torqued PSA barrel nut
I'm trying to remove my mlok guard but it's stuck! Any idea why ? It looks just like your and I removed the two lower screws and one on top where the picatinny is.
would i need to purchase a new gas tube and does the gas block come in as apart of the kit?
Concerning 5:10 is blue thread lock ok? will it hold up to the heat?
I am re-installing my hand guard, however mine keeps nose-diving at the top near the muzzle.
Great instructional and demonstrational video on AR-15 upper assembly. Thank you!
Hey, so with the A2 sights am I re using the OEM gas tube? I purchased the low pro block. Having issues removing the tube from the A2.
Thanks for the video! I have one of your rails and was wondering if you go from free float to another free float, do you still have to remove the gas block??
Good video
One thing I do is use a plastic picatinny hand stop or rail to bridge the hand guard/upper to perfectly align the hand guard to the upper before tightening those barrel nut bolts
Awesome video very well detailed
I have basic tools no vice should i hire a gun smith instead
If I’m just replacing my existing free float hand guard do I need to remove the barrel nut and install the new one?
I’m here because Randy is coming here. And my wife says this guy could definitely be Ryan’s son. Good luck on growing this channel!
What size is the wrench for the barrel?
Thats not a clam shell
Do I have to have a anti rotation slot on the lower receiver to install this and hand guard on my ar15 pistol
Came here to watch a hand guard install but you put together a whole upper, it's that easy?
What size torque wrench do you need ?
Thank you Watched 4 other install of Free-Float M-LOK Handguard for AR15 and none of others showed where all the bolts are. Could not get it off until you showed the small ones recessed for holding onto the barrel.
Great video and the GB pin went in perfect! I will try this just before installing your rail, which i will oder this weekend!!! Thanks for the video.
Great instructional video. Thanks.
Watched for gun assembly reasons.
Enjoyed for concise step-by-step.
Liked for Meteorite ring.
I notice in different images online that there are 2 versions of set screws. Why? Which is newer version? Thanks
Why havent you all restocked anything recently?
I would like to try this handgaurd in a 12" on a build I'm currently working on.
What length handgaurd was this?
I just bought there slick side upper and it's just a well made as my aero percision but looks better.
I purchased the handguard, magpul stock and grip. Putting them on today to finish up my first build.
Debated having a local armorer install it due to time constraints. But nothing like building your own. having bought a bare bones left-hand upper, I didn't install the gas block and tube. But I needed a handguard installed. This vid helped me do that. Good stuff, AT3.
I’m stoked to put mine on this weekend! Thanks for the video!
I like that trick with the gas block, I’m gonna use that next time
Will the spear free float work with a piston gun
Will M-Lok attachments mount on all sides of the handguard?
I can vouch these handguards are top notch!
Just ordered the Handguard. Thanks for the informative vid.