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Saving weight on 6.5CM auto

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Built up a 6.5 CM AR with “average” components. Light handguard and 22” barrel - but it’s still a bit heavier than I hoped.

 

Aero upper/lower

Standard bolt carrier 

Standard parts kit 

slr sentry 7 gas block 

magpul moe rifle stock (was thinking prs but talk about heavy!)

Warne x-skel mount

 

Thinking of swapping out to lightweight bcg which should be 4-6 ounces off. Questions:

1.) What’s your experience with lightweight BCG in these setups? What carrier, how does it run, weight savings compared to standard? Right now have standard rifle buffer but not opposed to Jp silent capture or something?? 

2.) Any other obvious places to save weight without spending a fortune you guys see? 

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1 hour ago, Dan Sierpina said:

The barrel is the biggest weight reduction possiblity. You don't mention the brand or contour.

 

Fair - although that’s off the table for modification :)  Too much $$ spent to call it a paper weight. 

 

It’s about 42oz, no muzzle device, which isn’t bad for 22” - especially compared to any of my bolt guns. 

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I have a Aero M5E1 lower/upper combo that I built with their 15" handguard and a Faxon 16" lightweight profile .308 barrel.  With a Magpul PRS stock and Vortex Diamondback Tactical 4-16 scope, it's over 12lbs.  Kinda hard to make a large frame rifle too light, but if you have the M5E1 like I do, it's definitely going to be heavier than most.

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Light BCG isn't ideal for what is likely a fairly over-gassed rifle...

As previously mentioned, barrel is most likely place to save a bit, turn it down some, shorten it, lighter gas block, lighter comp.

What handguard? Aero?

 

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Carbon fiber handguard would cut weight significantly for a few hundred bucks. 

 

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35 minutes ago, Chucky said:

Carbon fiber handguard would cut weight significantly for a few hundred bucks. 

 

Looks like that upper has a proprietary handguard...

Are there options?

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Seems like a fairly heavy barrel and receiver set, which are two of the main places to save weight on a large frame AR. It doesn't make a whole lot of sense to me to try to save a couple ounces in the bolt carrier when using a 42 oz barrel. 

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On 10/11/2019 at 3:32 PM, wgj3 said:

Looks like that upper has a proprietary handguard...

Are there options?

Their enhanced upper receiver is a proprietary design but if the OP used a standard M5 receiver set than there is no issues with going to a carbon fiber handguard. 

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