Installing a bayonet lug.

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13 years 11 months ago #6319 by Charlie
Installing a bayonet lug. was created by Charlie
I'd like to install a bayonet lug on my new AR-10 A4BF. On Armalite's site I see; "M15/AR10 GAS BLOCK BAYONET LUG WITH ORING. Item Number: 15806255KIT".

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Is this the part I want?

How difficult is it to install?

I'm pretty handy with tools, but don't want to screw anything up.

TIA,
Charlie

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13 years 11 months ago #6325 by Hot Lead Zapper
Replied by Hot Lead Zapper on topic Re:Installing a bayonet lug.
Yes sir, you

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13 years 11 months ago - 13 years 11 months ago #6352 by Charlie
Replied by Charlie on topic Re:Installing a bayonet lug.
Will do.

Is the gas block going to try to wander around on me, or is it keyed to the barrel?

Update: I found something that looks appropriate on Brownell's site about replacing an A2 front sight with an A4. That looks simple enough.

Charlie
Last edit: 13 years 11 months ago by Charlie.

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13 years 11 months ago #6360 by Hot Lead Zapper
Replied by Hot Lead Zapper on topic Re:Installing a bayonet lug.
Remove the hand guards and place the upper up side down on a flat surface. Make sure the muzzle is off the edge of the flat surface so only the picatinny rail of the gas block and upper is touching the surface. Use the tapered shoulder of the barrel to index position of the gas block. Slide the bolt by hand to make sure the gas tube doesn

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13 years 11 months ago #6412 by Charlie
Replied by Charlie on topic Re:Installing a bayonet lug.
Hot Lead Zapper wrote:

Remove the hand guards and place the upper up side down on a flat surface.


Cool. Thanks!

The bayo lug and an EXO022 scope mount is on order. Hope to see it by this weekend.

We'll be adding a Bushnell Elite 6500 4X16 mil-dot when the next pay check hits the bank. I wish it was a Trijicon TR-22, but at my pay grade the $250 up-charge for the TR-22 is a deal breaker.

Charlie

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13 years 10 months ago - 13 years 10 months ago #6446 by Charlie
Replied by Charlie on topic Re:Installing a bayonet lug.
Our parts arrived yesterday, but what with one thing and another I didn't get a chance to take a look at them until today.

Earlier this eve I got out the AR-10, removed the lower receiver, and set the upper receiver on the counter. Here's the situation;

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Armalite used the small gorilla wrench on the cap screws, so it was no problem to remove them with the shorty allen wrench. In this next photo I have inserted the O-ring into the depression in the bayonet lug adapter and slid (slid!) the adapter into the gap in the gas block. It went in easy except for the resistance of the O-ring.

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I made sure the gas block was square with the rear rail, and tightened the cap screws as much as I could with the allen wrench and bare hands (about the same torque as when I removed them. Viola! (as my ex liked to say), the job is done.

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Total time to do the job was about 5 minutes, three of which I spent looking for the correct size allen wrench. The bayonet lug mod is a no-brainer, and I feel like a real wus for worrying about it.

Charlie (is expecting his Phrobis M9 to arrive tomorrow)
Last edit: 13 years 10 months ago by Charlie.

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