I go over the installation of the Geissele Mk14 hand guard on an already assembled AR-15 but the same process will work when building an AR-15 from parts.
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I Have to replace the upper receiver on a URGI. intimidated, something about messing w Geissele barrel nut/feed ramps gas alignment. Etc. Haven’t seen it done. The rear take down post cracked! Anyone know of an instructional vid on that?
don't use your torque wrench to loosen nuts it will get them out of spec.
would this work with an adams arms low profile gas block?
I actually had to tap my URG-I rail on with a hair of love- nothing serious. I installed the barrel nut on that came with the rail, loosened the detent screws that align with the grooves on the barrel nut, ensured the set screws were backed all the way out, and it still wouldn't slide on. I installed it in Indiana in September, and we did have an unusually cooler night (low – mid 60's) so I'm wondering if that caused the rail to shrink??? Idk.
If your rifle has a "free float" hand guard already. is it just a matter of unscrewing it, removing it, then replacing the old handgaurd with the new one and secure the screws?
Idk why noone had came out with a small precision, solid design that screws on top were the handguard meets the receiver to add absolutely no rotation to that handguard.
Begin by asking folks to LIKE and SUBSCRIBE . Your likes to views ration is unusually small, and it shouldn't be.
Loosen your scope mount screws
Could you of just punched out the gas tube instead of taking off the gas block ? I’m new to building uppers and I’m bought a geissele mk14 for my bcm.
That torque wrench needs to be 90 degrees to the adapter. You're actually torquing beyond 40 inch-pounds since you've lengthened the arm the distance between the 1/2 inch torque wrench terminator and the actual application point of torque at the end of the adapter. Granted, the torque spec for barrels is a large range, but this is an important aspect of using a torque wrench that I see too many people ignoring or unaware of.
dude. are those barrel dimples too deep lol
But what if the barrel isnt concentric inside the gaurd? How do u correct the concentricity?
Just got my MK4, instantly my new favorite hand guard. The dessert dirt color is beautiful! Install is so easy since theres no timing of the gas tube. My only complaint is I had to purchase the barrel nut wrench separately.
I just put together a mk4 with carbine length gas tube but the barrel but is so long that it hits knocking the alignment off. I’m contemplating grinding it down because I can’t find any info on a gas tube that’s bent more forward so it doesn’t hit.
This guy can do a perfect Cosplay for Hitman Codename 47 :O
Question: Can you leave the BCM gas block on and remove the KMR barrel nut? Will the MK14 barrel but clear the BCM gas block when installed for the new rail?
is geiselles barrel nut aluminum?
@mrgunsngear is it normal for the gas tube to slightly contact the barrel nut? I’ve a mk14 with a carbine has tube and have read this occurs with others as well.
I never use red lock tight
Dig that tune at the end of great vid.
Would this fit on an aero upper? The regular one not the enhanced.
This video misses the last step which is quite important. There are 2 set screws on the back of the MK-13 rail that need to be tightened to help keep the rail from rotating.
Jesus Loves You All
mr gunsngear is there a reason why you didn't install the geissele gas block and re-installed the BCM gas block?
Late to the party on this video, but holy crap, how deep did BCM think they needed to drill that front dimple?!
no threadlocker on the rail screws?
Oh gosh, cue the torque police..
What size Barrel is that because I have a 16 inch barrel on my AR where did you get it from and price
I remember when aeroshell was 25$ for a tiny bit..
Any issues with the BCM gas block contacting the interior of the MK14 rail during firing, etc.?
Planning a somewhat high end upper for my "go-to" rifle. I'm just putting this here for anyone to give any opinions or input on my planned upper.
My goal here is a lightweight but very durable, reliable, tough weapon that could last for a very long time without worrying about any of the parts having issues.
Upper receiver – Debating between a few options
– Faxon enhanced light weight trued upper with forward assist and dust cover
– Vltor MUR
– BCM assembled upper
– Aero precision m4e1 threaded upper (the version that works with regular handguards not the one designed for their handguards.)
Barrel – Daniel defense 14.5" CHF LW mid-length with .750 gas block (22 oz stripped)
Handguard/Gas block – Geissele MK14 m-lok 13" handguard with super gas block (will have barrel dimpled then the gas block pinned by ADCO)
Gas tube – who cares really but a spikes stainless steel and nitrided tube
Muzzle device – VG6 epsilon slim (under .750 so I could still remove the gas block and handguard even with muzzle device pinned (Will be pinned and welded by adco when sent in for the gas block install and barrel dimpling.
BCG – as of now probably just a Toolcraft nitride BCG from Cryptic with the carpenter 158 bolt
Charging handle – Geissele airborne ambi handle
Iron sights – Magpul mbus pro
Optic/Mount – Trijicon TA-50 (3×24) 5.56 BDC reticle with midwest qd mini acog mount (This optic/mount combo fits the theme of lightweight. Combo would only weight in at 8.3 oz)
Light – Surefire m300c 500 lumen light with arisaka offset m-lok scout mount.
I have no doubt the set screws would never come loose but I'd still just fell better inside if BCM would go ahead and also pin the gas blocks.
Everybody wants to be an operator.
Good info and presentation..Thank you sir.
How well will this fit the Daniel Defense DDM4V11?
Torque wrench should always be 90 deg for proper torque
Maybe this is just an automotive thing but coming from building cars, it’s a no-no to add thread protector to a thread that has specific torque specs. Hence why you generally never see thread protector on wheel lugs or suspension components. Is the barrel nut just not that big of a deal to be off it’s torque specs? Just making sure before I finish my own build. Thanks bud