J&B Firearm Sales
Sporting Systems
Bear Creek Arsenal
HighLine Firearms
Oregon Rifleworks
Southwest Firearms
JavaScript is disabled
Our website requires JavaScript to function properly. For a better experience, please enable JavaScript in your browser settings before proceeding.

  • Join the #1 community for gun owners of the Northwest

    We believe the 2nd Amendment is best defended through grass-roots organization, education, and advocacy centered around individual gun owners. It is our mission to encourage, organize, and support these efforts throughout Oregon, Washington, Idaho, Montana, and Wyoming.

    Free Membership Benefits

    • Fewer banner ads
    • Buy, sell, and trade in our classified section
    • Discuss firearms and all aspects of firearm ownership
    • Join others in organizing against anti-gun legislation
    • Find nearby gun shops, ranges, training, and other resources
    • Discover free outdoor shooting areas
    • Stay up to date on firearm-related events
    • Share photos and video with other members
    • ...and much more!

builder set

In set theory and its applications to logic, mathematics, and computer science, set-builder notation is a mathematical notation for describing a set by enumerating its elements, or stating the properties that its members must satisfy.Defining sets by properties is also known as set comprehension, set abstraction or as defining a set's intension.

View More On Wikipedia.org
Recent contents
  1. M

    Aero precision chocolate chip set

      1. For Sale
    • $1200
    • Lakewood
    • Washington
    For sale out of Washington willing to travel open to offer manly looking for cash have about 500 rounds through it runs smooth and fast Build list Aero precision builder set chocolate chip cerekote by ely yerian design 11.5 inch 556 barrel Vg6 delta muzzle Aero lower parts kit minus...

  2. ORW Receiver Set w/ 16" Dracos Straightjacket Barrel

      1. For Sale
      2. For Trade
    • $750
    • Hillsboro
    • Oregon
    Selling my Oregon Rifleworks Receiver set. Hard to tell in the photos but it's cerakoted in their custom run of "urban grey". I can't upload more than one photo, so please reach out if you'd like more. I paired it with a 16" Draco's Straightjacket Barrel chambered in .223 Wylde(5.56 & .223...
  3. PDXElectrician

    Aero Precision M4E1 Builder Set

      1. For Sale
    • $400
    • Molalla
    • Oregon
    Aero Precision M4E1 Builder Set w/ 15" Atlas R-one MLOK handguard - Bronze Digiwash Stripped Upper, Stripped Lower, and Handguard Featuring a Bronze Digiwash finish applied by Weapon Works. This unique finish features contrasting shades of bronze and gold with a laser etched digital camouflage...
  4. D

    Aero Precision M4E1 Builder Set, Blown Deadline Half Tone Combat Gray Atlas S-One 15"

      1. For Sale
    • $750
    • Woodland
    • Washington
    Brand New M4E1 Aero Builder set. Blown Deadline Half Tone Combat Gray color, looks amazing. Handguard is a 15" Atlas S-One. It's been in my safe collecting dust for a long time, I have to make room for other projects. Unfortunately I can't sell it to anyone in Washington state since we have an...
  5. HighLine

    Consignment: F-1 Firearms UDR-15-3G Old Glory Builder Set

      1. For Sale
    • $1545
    • Newberg
    • Oregon
    Fresh on consignment Never Built F1 Old Glory Builder Set Skeletonized Billet Matched Receiver Set Scalloped top MIL-SPEC picatinny rail Oversized ejection port Oversized trigger guard 60° beveled magwell Enhanced takedown pins included and installed Custom Old Glory Cerakote $1545 +...
  6. ImNotV3ryNinja

    Psa AK 105 pistol 5.45x39

      1. For Sale
    • $900
    • Canby
    • Oregon
    5.45x39 Psa ak 105 with full plum furniture set and alg trigger. Has about 500 rounds through it and only problem I've had is it doesn't like the cheap plastic bulgarian mags, runs everything else though. Not pin and welded so it is still a pistol Includes two pmags, as well as extra surplus...
  7. jessygirl20150

    NIB multi cal. Aero Precision M4E1 Builder set, 9" Handguard, Midnight Marshland Builder set.

      1. For Sale
      2. For Trade
    • $520
    • Wilsonville
    • Oregon
    New in box: multi cal. Aero Precision M4E1 Builder set, 9" Handguard, Midnight Marshland Cerakote from Aero. Please see list below for Aero Precision parts I have for sale for this build. $520 Trade: +/- cash on either end. - High end AK47 in 7.62x39 / 51 - ACOG TA02-D-100393 ( LED...
  8. jessygirl20150

    NIB multi cal. Aero Precision M4E1 Builder set, 9" S-one Handguard, Midnight Marshland Cerakote from Aero $520

      1. For Sale
      2. For Trade
    • $520
    • Wilsonville
    • Oregon
    NIB multi cal. Aero Precision M4E1 Builder set, 9" Handguard, Midnight Marshland Cerakote from Aero. Please see list below for Aero Precision parts I have for sale for this build. $520 Trades: +/- cash either side: - Henry Big Boy X blued/black in .357 - ACOG 4X32 LED - Trijicon RMR Type 2...
  9. jessygirl20150

    NIB - Aero Precision M4E1 Builder set with all Aero Precision parts to finish, Midnight Marshland Camo.

      1. For Sale
      2. For Trade
    • $1400
    • Wilsonville
    • Oregon
    Aero Precision M4E1 Midnight Marshland Builder set 9” S-one slim line handguard Aero Pro Nitride BCG .223/5.56 Aero Breach charging handle Aero LPK Aero buffetube kit 10.5” Odin works ultra lite .223 wylde Geissle SSA-E trigger Noveske Flaming pig Magpul pistol grip SBA3 brace $1400 Trades...
  10. randymarsh

    Aero M4E1 Builder set “Midnight Marshlands” cerakote

      1. For Sale
    • $350
    • PORTLAND
    • Oregon
    9” Atlas S-one handguard. Prefer transfer in PDX. Will drive into Washington to meet you only between 10am-2pm $350/obo First come, first served. Will not hold. Thank you!
  11. randymarsh

    Aero Builder Set

      1. For Sale
    • $300
    • PORTLAND
    • Oregon
    Bronze digiwash. 15” handguard $300 Buyer handles transfer in Portland
  12. kasuk

    SOTA Arms Billet AR-15 receiver set

      1. For Sale
    • $175
    • Redmond
    • Washington
    Trade my receiver set for your red dot set up - SOTA Arms Billet AR-15 receiver set 7005 billet aluminum w/ integrated trigger guard. - Strike Industries Ejection port cover - Seekin Precision oversized bolt catch release Looking to trade for a red dot. - Holosun 403 or 503 - Primary...
  13. Tacompton173

    Anodized Burnt Red Aero Precision Builder Set (lower complete)

      1. For Sale
      2. For Trade
    • $300
    • Tacoma
    • Washington
    Early Aero Precision builder set done as a factory sample in Burnt Red anodized. Could be a great excuse to build a gun for the wife. Note the small ding on the magwell. Otherwise the set is perfect. Lower is complete. Will come with both Black and Red Handguards. Red Handguard is a little...
  14. PDXElectrician

    WTS Aero Precision Builder Set

      1. For Sale
    • $400
    • Molalla
    • Oregon
    Aero Precision M4E1 Builder Set w/ 15" Atlas R-one MLOK handguard - Bronze Digiwash Stripped Upper, Stripped Lower, and Handguard Featuring a Bronze Digiwash finish applied by Weapon Works. This unique finish features contrasting shades of bronze and gold with a laser etched digital camouflage...
  15. jlynblackmore

    Aero Betsy builder set

      1. For Sale
      2. For Trade
    • $400
    • Elmira
    • Oregon
    Aero Betsy Ross 1776 Build set Never fired only mocked up Perfect shape 15” atlas one handguard $400
  16. DipSchmidt

    Aero Precision Builder Set *PRICE DROP*

      1. For Sale
    • $475
    • Vancouver
    • Washington
    I forget which month this set was, but it was one of the 2018 limited runs. It's a blem, but I'm not sure where the blemish is. It's brand new and has lived in the box since purchase.
  17. DipSchmidt

    Aero Precision Builder Set

      1. For Sale
    • $650
    • Vancouver
    • Washington
    This is a limited run builder set from Aero Precision. I don't recall which month this set was sold, but it is from 2018. The set has never been assembled into anything and has spent its time in the box. It is listed as a blemished product, but I haven't found the blemish.
  18. Valkyrie

    Aero Precision 9 inch war torn acid bronze builder set

      1. For Sale
      2. For Trade
    • $550
    • Kenmore
    • Washington
    Looking to sell or trade my new Aero 9 inch builder set. Bought it back in 2019 to build a 300blk but never got around to do it. Sell price 550$ Items looking for trade in order of desirability: Ruger mk4 with threaded barrel (prefer 22/45 tactical). Really not looking for colored lite models...
Cerberus Training Group
Bear Creek Arsenal
Sporting Systems
Southwest Firearms Forum
Tigard Pawn 4 More
Copeland Custom Gunworks
Back Top