How to Install the SPEAR Free-Float M-LOK Handguard for AR15 - AT3 Tactical
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- Опубліковано 25 лип 2024
- 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.
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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
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I like that trick with the gas block, I’m gonna use that next time
Great instructional and demonstrational video on AR-15 upper assembly. Thank you!
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.
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.
I’m stoked to put mine on this weekend! Thanks for the video!
Watched for gun assembly reasons.
Enjoyed for concise step-by-step.
Liked for Meteorite ring.
I can vouch these handguards are top notch!
We appreciate the comment, FreedomLover!
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
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 purchased the handguard, magpul stock and grip. Putting them on today to finish up my first build.
Great instructional video. Thanks.
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.
Just ordered the Handguard. Thanks for the informative vid.
Thanks for choosing, AT3 Tactical! We're glad you like the video!
Awesome video very well detailed
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!
Welcome to AT3 Evan! We're so glad to have Randy, so excited to work with him.
Good video
I just bought there slick side upper and it's just a well made as my aero percision but looks better.
I would like to try this handgaurd in a 12" on a build I'm currently working on.
Do I have to have a anti rotation slot on the lower receiver to install this and hand guard on my ar15 pistol
I notice in different images online that there are 2 versions of set screws. Why? Which is newer version? Thanks
Came here to watch a hand guard install but you put together a whole upper, it's that easy?
What length handgaurd was this?
What size torque wrench do you need ?
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.
Why havent you all restocked anything recently?
Will M-Lok attachments mount on all sides of the handguard?
Hi Solar! Yes, the attachment points are at 3, 6, & 9 o’clock position.
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??
Thanks Sam! Nope, our low profile gas block should be compatible with pretty much all free float diameters currently out there. Definitely watch the barrel nut, though. Not all free float handguard manufacturers use the same barrel nut... I would say that our barrel nut is one of the most commonly used across the board, but different ones exist so keep an eye on that. :)
@@At3tactical thanks for the feedback much appreciated!
If I’m just replacing my existing free float hand guard do I need to remove the barrel nut and install the new one?
Hi Chris! Yes, the SPEAR handguard comes with it's own barrel nut.
I have basic tools no vice should i hire a gun smith instead
Will the spear free float work with a piston gun
Thanks for your interest, Miles! I'm afraid our Spear is not compatible with most piston kits as they won’t fit under the handguard. The inner width where the gas block would sit isn't wide enough for the gas block. It's only at 0.395".
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.
Never mind I found a tiny pin, I think that's it.
Well, that was quick! 😂 Yup, and a 5/64" punch will pop that little guy out in a jiffy! When it comes time to put it back together, best to get a new pin.... actually, grab a couple because they are notorious for "carpet surfing" aka, lost in the carpet abyss!
@@At3tactical ita funny you say that..... thank you for putting 2 pins in there😂😂 I got it lined up and tightened. Now for the hand gaurd. Thanks for all the pointers!
Are you guys planning to make this in anodized red?
Not for the foreseeable future. We will be doing a special run of red Cerakote uppers, lowers and hanguards this summer.
I am re-installing my hand guard, however mine keeps nose-diving at the top near the muzzle.
If you'd like, you can give us a call and Kevin will be able to help troubleshoot that with you.
(763) 284-6321
What size is the wrench for the barrel?
Hi Robert! It's 30 mm.
would i need to purchase a new gas tube and does the gas block come in as apart of the kit?
Hey there, it's just the handguard, barrel nut, barrel nut wrench and hardware in our AT3 Tactical Spear Free Float Handguards. Meaning, if you need to replace your existing gas block and tube to fit a free float handguard (M&P15 Optics Ready style comes to mind), then you'll need to get a Low Profile Gas Block & Tube. YT won't let me post a link, but we have AT3 gas blocks & tubes as well. ;)
@@At3tactical say less 👌🏽
Concerning 5:10 is blue thread lock ok? will it hold up to the heat?
no problem
If you don’t shoot your rifle very often it will work fine. Just don’t take a class with it or it will fail.
Thats not a clam shell