Second 6.5 grendel build is officially on! 28" ELR build

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mel80

New member
specs so far
custom 1-8T 28inch stainless hbar +2 gas system .936 at the gas block (McGowen barrel) threaded 5/8-24
titan brake/qd adapter for the 7 inch titanium can
20inch slim mlok handguard
.936 micro gas block
NBS Slick side rear charging billet reciver
Nightforce nxs 5.5-22 X 56 scope
Luth ar mba-1 buttstock ( may change )

not sure on bcg/buffer combo just yet , im going to try out a few of the options i already have on hand i may opt for a low mass bcg

for now its going on a dpms panther lower receiver till i find one i like

still on the hunt for the lightest trigger i can find

parts should start rolling in sometime next week ill post pics as they come in except for barrel thats 8-10 weeks out
 
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mel80

New member
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Some parts starting to roll in finally
 
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highpower3006

New member
I am almost done with my 6.5 Grendel build. It started on a whim when I found a 20" 1-8" twist stainless barrel on sale at the same time a local FFL had new Noreen lowers on sale for $50.

I'm running the Luth MBA-1 stock as I want the adjustments that it offers. I am also going to run my AAC M4-2000 suppressor. AIM had a sale a while back on a single stage adjustable trigger and I decided to use it on this rifle along with an adjustable gas block. It's already assembled, I'm just waiting for a few parts to show up to put the finishing touches on it.
 
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mel80

New member
nice my other grendel is a 20 and ive been doing alot of long range stuff with it 1850y so far that about the limit with it though . the 8+ week wait on my new barrel for this build is killing me though , rest of my parts for the build except for a trigger will be here next week hopefully . . almost got my hands on a high speed national match trigger for a good price , but thinking i may just find the lightest single stage trigger i can find instead since im usied to single stage triggers
 
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Tallest

New member
The below is an excerpt from something Criterion Barrels put out recently. While I'm not an expert, this made a lot of sense to me.

There is a wide range of parts directed towards the AR-15 market that promise to make your rifle run smoother, flatter, more reliably, and produce better accuracy... Many manufacturers either don’t have a thorough understanding of the AR’s 8-step cycle of operation or prey on customers lack of knowledge and understanding of what makes these rifles perform. Lightweight and skeletonized bolt carrier groups reduce lock time which decreases accuracy and reliability while increasing wear and tear on internal parts and components like your extractor, lugs, bolt, cam pin, chamber walls, etc. Lightweight components negatively affect the timing of your rifles 8-step cycle of operation. If one part is changed, it is generally recommended to change other parts to make up for the effects of the “specialty” part... this is where an in-depth understanding of the rifles operating system is required and where many rifle builders run into issues.
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I am by no means attempting to qualify your level of expertise or tell you what you should or should not do. But this drew me up short when I was on the same BCG path you mentioned, and as such, I thought it may be helpful. YMMV
 
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brasscollector

New member
Lightweight components negatively affect the timing of your rifles 8-step cycle of operation.
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I did get a chuckle out of my friends choice to use a lightweight BCG in a 6.8 build. Ended up using the heaviest buffer he could to tame down the brass from flying downrange. In the end the rifle weighed about the same and he spent more $ for a lightweight BCG and a heavier buffer. I'll stick with my mil-spec stuff, it's nothing to brag about but it gets the job done.
 
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mel80

New member
im not going to buy one till i see how it behaves with my std bcg's with the +2 gas system and adjustable block it may be of a benefit on this rifle
 
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Tallest

New member
mel80 said:
im not going to buy one till i see how it behaves with my std bcg's with the +2 gas system and adjustable block it may be of a benefit on this rifle
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That makes sense, and of course you can build your gun your way. It was just information I hadn't entertained, and was therefore glad to have. Good luck!
 
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mel80

New member
mcgowen notified me today my barrel is ready to ship , feels like ive been waiting forever but atleast its on the way
 
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stagpanther

New member
I've bought a lot of McGowen barrels including 1-off custom ones, they are pretty good at letting you know the limitations of their barrels--I would ask them what they think about your "topology." On the other hand, having dealt with them enough times, I'm going to assume they raised the gas balancing issues with you already. Looks like you're outfitting for a silencer as well. 28" hbar is a lot of mama jama weight hanging out there!;)

I bought a couple of those luth ar stocks and can't stand them--but to each their own as they say. I think by and large AR buttstocks have become "pimp shows" and in the process most of them can't even do the basic job of staying movement-free.
 
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mel80

New member
i havent bought a stock yet , as for now im just going to swap it on my 20 inch grendels lower until i have the time to build a dedicated lower for this upper . on the other end of the spectrum i also have a 10.5 build in the works as well lol also 6.5g almost did a 300blk but then changed my mind when i saw ammo prices on 300blk
 
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grey_pilgrim

New member
I'll be interested to see how this pans out. I handled a 24" grendel at a gun show and that was what convinced me to build a Grendel. I'm really excited to see where this beast goes.

I really don't think you'll be happy with the Luth stock, unless you want to buy mine for the NIB price :D.

More seriously - I don't think you are building a practical gun. You are building this gun because you think it will spark joy inside you, and because you are attracted to the challenge of ELR with a Grendel. But since this gun isn't about getting max performance for minimum dollar, I wouldn't cheap out on the stock.
 
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mel80

New member
yeah ill decide on something down the road we all know i can shoot witht he cheap stock i have on my 20 as it is lol (34$)

infact i like it so much i run it on all my ar's
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i wouldnt mind something with an adjustable cheek rest though as with my 30 moa rail it raises my scope up .5 inch. i shuold just buy some 20/30 moa rings, but that means swaping rings everytime i wanna go night hunting, witht he rail i dont have to do that
 
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mel80

New member
got my shipping notification today so i should have it before the end of the week !!!!!

actually tracking updated ill have it lunch time on wensday
 
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mel80

New member
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amazingly i can shoulder this thing and hold it steady , and its so quiet , need a std buffer and a lighter buffer spring looks like need to break everything in though to know for sure
 
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