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upper receiver

In firearms terminology, the firearm receiver or firearm frame is the part of a firearm which integrates other components by providing housing for internal action components such as the hammer, bolt or breechblock, firing pin, extractor and trigger mechanism, and has threaded interfaces for attaching ("receiving") external components such as the barrel, stock, grip and mounts of telescopic sights. The receiver is often made of forged, machined, or stamped steel or aluminium; in addition to these traditional materials, modern science and engineering have introduced polymers and sintered metal powders to receiver construction.

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Recent contents
  1. T

    Aero Precision (ish) assembled upper

      1. For Sale
    • $501
    • Vancouver
    • Washington
    Going a different direction with my build so I no longer need this upper. Has a little more than 500 rounds through it, in great condition. Assembled by Limitless America. Aero upper receiver Aero black nitride BCG Midwest Industries 10.5" Slimline hand guard Ballistic Advantage 11.5" .223/5.56...
  2. Seraphim38

    [WTB] FDE AR upper receiver and Green upper receiver, adj 750 gas block, trigger

      1. Want to Buy
      2. Want to Trade For
    • Salem
    • Oregon
    I am mid-build of 2 uppers and have black AR15 upper receivers but want to switch to one FDE/coyote brown/tan upper receiver and one ODG/Green upper receiver. I have a complete brand new unfired DiamondBack DB15 300 blackout upper that I could trade for green or tan complete upper +/- cash...
  3. eldbillbo

    Rock River Arms RRA National Match AR15 A2 Upper Receiver with Hooded Match Sight

      1. For Sale
    • $200
    • Oregon City
    • Oregon
    Use in vg+ condition does have the action block rubs from removal. Does not have extended feed ramps CLICK TO SEE =1&c[content]=thread&c[nodes][0]=4&c[users]=eldbillbo&o=date']all my classifieds CLINK TO SEE Trades Wanted
  4. eldbillbo

    AR15 C7 Upper Receiver "A" Marked

      1. For Sale
    • $200
    • Oregon City
    • Oregon
    Finally digging through the last of my box of parts and I don't think I am ever going to use this. Its in new condition. Has M4 Feed ramps CLICK TO SEE =1&c[content]=thread&c[nodes][0]=4&c[users]=eldbillbo&o=date']all my classifieds CLINK TO SEE Trades Wanted
  5. Gunbuggy

    11.5 Inch Aero / Ballistic Advantage / BCM Upper Receiver - Adjustable Gas

      1. For Sale
    • $400
    • Amboy
    • Washington
    Up for sale is a lightly used suppressor ready 11.5" upper. It is an Aero receiver with a Ballistic Advantage 11.5" Hanson Performance Series, Aero adjustable gas block, and BCM MCMR-10 handguard. It has a loosely threaded A2 flash hider on it currently acting as a thread protector as I am...
  6. T

    Daniel Defense 11.5 URG & LOWER NEW UNFIRED

      1. For Sale
    • $1400
    • TROUTDALE
    • Oregon
    I have a Brand New, unfired Daniel Defense DDM4 Lower with a Brand New, unfired Daniel Defense Contract over run 11.5 inch Upper. Comes with DD Charging handle and Daniel Defense BCG that is not marked. Bought it from PSA that way. Also comes with DD hard case and 1 DD 32 round magazine. I Was...
  7. R

    12.5 BRT FCD upper receiver

      1. For Sale
    • $1000
    • Woodland
    • Washington
    12.5 upper Brt optimum 12.5 cold hammer forge barrel (hybrid gas system) Brt pinned gas block Brt blue gas tube Silencerco upper receiver Fcd x hodge 11.5 handguard Fcd epc Fcd forward assist Fcd heavy sling loop Fcd sling Blue force gear uloop Brownells Tin bolt Daniel...
  8. wockisha38

    DDM4V1 Upper Receiver

      1. For Sale
    • $800
    • Tigard
    • Oregon
    Selling my Daniel Defense DDM4V1 Upper Receiver Complete Without Accessories (Eotech, Surefire Flashlight and peq.) asking $800 Price is negotiable. Contact for more details. Estimated Round Count 1700-2000
  9. D

    BCM Upper Receiver (New)

      1. For Sale
    • $125
    • Boise
    • Idaho
    New BCM Upper Receiver. $125 paypal or venmo, shipping included in price.
  10. O

    NEW! A2 FN & Kaiser Aluminum AR15 stripped upper receiver....reduced to $150 shipped

      1. For Sale
    • $150
    • Tumwater
    • Washington
    Here's a brand new, never built, stripped A2 upper receiver made by FN and Alcoa Aluminum for an AR15 build. FK marked. Take a look at the pics, they'll show you everything about it. Finish is actually darker than the pics show. PM me with any questions. REDUCED to $150 shipped. Local...
  11. O

    REDUCED...All New Upper Receiver Group URG .....Colt, Daniel Defense, SureFire, flip-up sights and more.

      1. For Sale
    • $849
    • Tumwater
    • Washington
    REDUCED to $849. Here's another all new Upper Receiver Group built with a long list of quality pieces as listed... Colt 14-1/2" C MP marked M4 barrel Daniel Defense M4A1 Rail Interface System II, RIS II (FDE) SureFire FH556RC 4-prong flash hider Colt marked bolt carrier BAFE M4 upper receiver...
  12. M

    Aero Precision assembled upper receiver

      1. For Sale
    • $85
    • Olympia
    • Washington
    New in box Aero Precision upper receiver. May have mocked this one up but I can not recall. Box isn't marked blem but some T marks are light, see photo. Price is shipped OBO. PayPal / Zelle preferred.
  13. kwilson

    Almost complete AR upper receiver - .300 BLK, 10.5" barrel, OD green

      1. For Sale
    • $400
    • Beavercreek
    • Oregon
    Almost complete AR upper receiver in .300 BLK with a 10.5" barrel. It got some moderate use since I put it together a few years ago, nothing heavy. It runs great. Parts list: Aero Precision M4E1 upper receiver, no forward assist (green) Criterion core series 10.5" .300 BLK barrel, chrome...
  14. chipotle

    AR308 Builder Parts: PSA PA10 DPMS Low Upper Receiver, Midwest Industries 15" 308 Combat Rail

      1. For Sale
    • $60
    • Vancouver
    • Washington
    AR10/308 DPMS Low .308 upper parts for sale. Prices listed are for for cash exchanges in the PDX/VAN metro area. Will ship with electronic payment - DM for details & offers. 1] PSA PA10 Gen 3 assembled upper receiver ($60): FA and dust cover included as purchased from PSA. ~200rds. DPMS Low...
  15. bigbuddha96

    AR15 upper receiver

      1. Want to Buy
    • Happy valley
    • Oregon
    As title says I’m looking to buy all the pieces to put together an AR 15 upper receiver or buy one complete for cheap Don’t need barrel Just upper , BCG for 556 & CH I’ll Also take a cheap muzzle break for 556
  16. RobMa

    - SOLD - 11.5" FBI clone upper receiver - SOLD -

      1. For Sale
    • $449
    • Seattle
    • Washington
    Sorry, these items have sold 11.5" FBI clone upper receiver 11.5" Centurion Arms "FBI" CHF barrel with tabbed and pinned gas block (new) (full disclosure, there are minor blems on the GB) Charging handle (new) Fathers of freedom BCG (new) A2 flash hider (new) Troy Alpha Battle rail (new) BCM...
  17. G

    11.5 AR-15 Upper receiver (No BCH/CH)

      1. For Sale
    • $380
    • Vancouver
    • Washington
    11.5" AR 15 upper I built because I had a spare handguard laying around. Aero upper receiver, Rosco 11.5" Barrel, sharps brothers 10" hand guard, aero GB and tube with A2 flash hider
  18. W

    Geissele/BCM upper 14.5

      1. For Sale
    • $800
    • Gresham
    • Oregon
    Selling my Geissele/BCM upper. Has 400 rounds through it. Looking for $800 OBO. Send me an offer. Parts included listed below: 14.5" Geissele CHF chrome lined barrel BCM gas block and gas tube BCM upper receiver BCM bolt carrier group Geissele 13" MK16 super modular rail Radian Raptor LT...
  19. 5

    PSA 10.5 5.56 NATO phosphate 1:7 M-Lok upper with Sig Romeo and light

      1. For Sale
    • $299
    • Corvallis
    • Oregon
    Palmetto Sate Armory 10.5” 5.56 NATO 1:7 Phosphate 9” M-Lok hand guard. MBUS front and rear sights. Sig Romeo red dot sight, surefire light. Relatively low round count. Oh so tasteful rattle can coyote paint job. Not looking for any trades. Meet in Corvallis. Will ship where legal.
  20. NW PREPPER

    AR Pistol Starter Kit

      1. For Sale
    • $275
    • Boise
    • Idaho
    Everything is in good shape, just upgraded so I don't need these parts. Selling as a kit only, no part out. 1. PSA 10.5in upper receiver with PSA ambi charging handle. No BCG 2. SBA3 Pistol Brace 3. AERO Precision enhanced buffer tube 4. Standard buffer and spring 5. B5 grip 6. Daniel Defense...
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