Grendel build

[Greg_R]

This is my first Grendel build. I resisted for a long time but finally gave in to the temptation.

I stripped my 20" 223 Wylde because I want the Grendel and the 223 to look exactly alike. This is what I have so far. Looking for an accurate budget build. The 223 Wylde barrel is accurate, 3/4 MOA. I am hoping for as good or better from the Grendel.

Anderson lower
Guntec USA reciever extension
Spare A1 stock I had laying around
Guntec USA buffer and spring
Anderson LPK
AR Stoner enhanced trigger

223 Wylde is an AR Stoner 20" DMR profile stainless fluted 1:8 barrel
6.5 Grendel is an AR Stoner 20" stainless fluted 1:8 with 5R rifling
BCG's are AR Stoner 223/5.56 and 6.5 Grendel II
Charging handles are MAS Defense extended
Free Float forearms will be Guntec USA 15" KeyMod
Gas blocks and gas tubes are AR Stoner.

Waiting for my 6.5 BCG and Gass blocks and tubes to arrive in the mail. Will likely pick up the fore arms at the LGS tomorrow.

[VASCAR2]

Sounds like a great plan to me. Let us know how your AR Stoner 6.5 Grendel shoots.

[bj139]

Are you going to Loctite the barrel to the receiver?

[Greg_R]

No loctite. Actually I just use choke tube grease. Have been for years. Bought some aeroshell and while I'm sure it's good, I will stick with the choke tube grease. I just did not see any difference except for price.

[bj139]

I just used some grease with teflon particles in it on my only build. I did read where graphite grease was not good on aluminum receivers.

[Kilco]

Let us know how it shoots for ya!

[Thedave8]

Doing similar...Stoner 18 inch stainless fluted and stoner bcg....why are people lock tight ing barrels now? Never had one come loose out of all the AR'S I've built....just lube

[Drillboss]

Doing similar...Stoner 18 inch stainless fluted and stoner bcg....why are people lock tight ing barrels now? Never had one come loose out of all the AR'S I've built....just lube

The loctite isn't put on the barrel nut. It's applied to the outside of the barrel extension to bed it into the upper receiver.

[Greg_R]

I still don't see the need for locktite????

[Drillboss]

It fills the space between the receiver and barrel extension for the purpose of minimizing any play at that connection. Bedding, along with lapping the receiver face, are considered to be helpful in truing the barrel alignment with the receiver.

There was a thread or post here a while back where a member saw a significant improvement in his groups after lapping and bedding.

[6.8 klr]

Squaring up the face of the receiver so it aligns true to the barrel extension along with lapping and bedding worked wonders for accuracy in my 18" BHW barrel.

Just Sayin'......

[Thedave8]

Interesting info....would think heat would just charbroil lock tight...wonder how hard it is to re barrel if lock tight was used...

[rabiddawg]

Interesting info....would think heat would just charbroil lock tight...wonder how hard it is to re barrel if lock tight was used...

Depends which loctite you use.

I used a heat gun on the last one I had to disassemble and had no problem.

[bj139]

Depends which loctite you use.

I used a heat gun on the last one I had to disassemble and had no problem.

Red or Blue Loctite?

I just bought an Alexander Arms Overwatch and shot the best group ever for me using Wolf steel ammo.
The Overwatch is reported to have the barrel and nut bedded to the receiver and the handguard bedded to the nut as well.
I think I want to bed my other Grendel with Loctite. Is blue good enough?

[Lastrites]

I believe in bedding but for some to say that it worked wonders makes me wonder if they did any actual before and after testing. Not all barrel extension fit the receiver the same as some can be sloppy where others it is challenge to seat. A sloppy fit may need more than lock-tite and may require shims to properly tighten the fit.

I also believe in truing the face of a receiver if need be but have little faith in the lapping tools that many use with a drill or can be turned by hand, your building a precision type rifle and want the front lapped I would suggest taking it to a machine shop and not roll the dice in the garage. The reality of it is you may be making it worse than what it was or may take too much off, issue is you have no idea how far it's off or how far to go and have to put faith in how much anodizing that has been remove as your only feedback.