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PocketFullOfShells posted a topic in NFA Market BoardI have a (NIB) Sig 516 Piston Driven Upper for sale. This one has the very hard to acquire equip with Cold Hammer Forged 14.5" Barrel with 1x7 Twist, chrome lined machine gun barrel, heat shielded handrail and Full Auto Bolt/Carrier assembly that Sig will now only sell to MIL/Law Enforcement. This is the Latest and Greatest Gen-2 Upper with the 4 position gas adjustment piston system. If you are shooing suppressors this is a great feature to reduce gas blow back Excellent upper for any full auto lower **Sold**
Sig Sauer 516 7.5 piston Upper, used appox 2500 rounds. Works fine never had a problem with the upper. 450.00+ 25.00 to ship if needed DETAILS SIG516 Gen 2 Upper Complete Receiver Assembly, 7.5 in, Semi, Special Configuration The SIG516 7.5" upper allow operators to upgrade their current ar15 rifles from direct gas impingement systems to the SIG SAUER advanced short-stroke push rod system. This advanced operating system reduces carbon fouling, excessive heat and unburned powder in the action, ensuring reliability and function that is unmatched. A standard 5.56mm NATO chrome-lined chamber and bore ensure reliable function in any environment. Barrels feature an A2 flash suppressor and are threaded 1/2 x 28 TPI, allowing the SIG516 to adapt to a number of aftermarket accessories and suppressor mounts.