[Steve40th]

516 patrol with Trijicon TA31, front BUIS site OEM sig, 30 round mag full 9.6 lbs.. Ouch.. Touch heavy.
My 300 BLK 8.5 inch SBR with 416R barrel, 28 rounds, and BUIS sights off a Sig 516 Patrol is 6.4 lbs.
3.2 lbs is allot.. You can definitely feel it.

 

[Steve40th]

So the piston block is heavy, anything else, as that is a lot of weight.

 

[Steve40th]

Being as it is an expensive rifle, its best just to get used to it. Cost for lowering weight on it would not be cheap. The rail is about the only thing, besides the Trijicon, that weighs a bit.
Barrell? Maybe one of sigs 14.5 516 uppers.. But, that would be another SBR form..

 

[Steve40th]

Carbon fiber handguard is a few ounces lighter from what I read. The front site, a few ounces, and not sure on different buttstocks. I would rather leave the rear weight alone for balance.
Maybe a sling that supports the weight while standing..

 

[Steve40th]

rail isn't too heavy for what it is, but the barrel is a heavy profile which adds a significant amount of weight to the front end. I have also see a ton of different furniture on 516s so that can play a role too. They could have made the gas block lighter too, so again more weight. Ounces here & there adds lbs quickly.

Do they make aftermarket barrels that would work, or just go shorter, like a 14, 10.5 etc

 

[Steve40th]

Loaded? Not terrible. My 10.5 AR with an Olight m22, dbal D2, Holosun 503, 5x magnifier, weighs bout the same.

Once Steiner gets off their butts and releases the a4 I can replace the d2 and ditch my Olight. Then there will be some weight savings!!!

Pics of the D2?