upper

Hi Community, New poster here. I own a P226 from Sig and am quite happy with it, so I'm looking to add an AR-15 to my collection and thought about sticking to Sig. Back in 2013, someone had this exact question here: M400 Proprietary upper/lower? The article was extremely helpful for me...

Brand new, never used or even mounted MCX Virtus “stripped” upper from Sig. As it came from Sig, it includes the forward assist and dust cover. Does not come with a charging handle, bolt carrier group, bolt, barrel, or handguard. This is a great option for someone that wants to set up an optic...

I’ve got a brand spankin’ new stripped MCX Virtus upper in gray that I’d like to trade out for a black or FDE one in new or near-new condition. It just arrived on my door step from Sig this afternoon. Sig’s definition of “stripped” is an upper with dust cover and forward assist, but with no...

Slide, barrel, recoil spring from a NIB P320-M17. Springfield MO / FLW area paypal and USPS are good. 350 OBO

Sig MCX "stripped" upper receiver (Legacy / Gen 2) - $260 SOLD Has 400 rounds total through the upper Includes the newer ambidextrous "gas buster" style charging handle ($100 new from Sig) Does NOT include a bolt carrier or bolt (hence being called "stripped") Use this to mount your spare...

Update 3/12/2018: SOLD! Excellent condition, short extractor. Discrete PP, check, or cash. $250.

Hello Guys, I have been on the AR scene for a while now but just now really getting into mods. Question I have is, does anyone know how to find one of Sig's lo pro/rail height gas blocks like the ones used on the SRP and Patrol models? I know you can google search and find about 500 different...

Up for sale is a Palmetto State Armory AR-15 upper. It has a 16" CMV 1/7 chrome lined barrel and has a factory installed low-profile gas block and Midwest Industries T9 free float rail. This is new and unfired. PSA was selling this for $470, and I installed a the trim ring on the front of the...