J&B Firearm Sales
Southwest Firearms Forum
Oregon's Indoor Shooting Range
Bi-Mart
Bear Creek Arsenal
Sporting Systems
HighLine 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!

buffer tube

A buffer amplifier (sometimes simply called a buffer) is one that provides electrical impedance transformation from one circuit to another, with the aim of the signal source being unaffected by ("buffered from") whatever currents (or voltages, for a current buffer) that the load may produce. Two main types of buffer exist: the voltage buffer and the current buffer.

View More On Wikipedia.org
Recent contents
  1. smitty007

    Tango Down VFG, LBE & SB Tactical Buffer Tubes, Magpul PMAG

      1. For Sale
    • Eugene/Springfield
    • Oregon
    Willing to ship, but prices below don’t include shipping. Please let me know if you have any questions! I have some other ads and am happy to combine shipping for different items from different ads. 1. SB Tactical Buffer Tube, Mil-Spec, 6-position, New no box - $35 2. LBE Unlimited Buffer...
  2. RobMa

    Leitner-Wise Design Heavy Duty Buffer Retainer

      1. For Sale
    • $19
    • Seattle
    • Washington
    The PLW Design Heavy Duty Buffer Retainer offers a larger and stronger surface to hold the buffer in place during sustained and full automatic fire. The patent pending new Generation 2 HDBR has even more surface area contact with the buffer and the retainer is self-centering and rotation...
  3. E

    Armaspec stealth recoil spring

      1. For Sale
    • $50
    • Vancouver
    • Washington
    I purchased this from a member on here and it didn't work with my 9mm BCG, so it's back up for sale. Weight is H2/4.7oz. Previous owner claimed to have never used it. I installed it, but never ran it. Asking $50 firm. No shipping, face to face only. Located in NE Vancouver.
  4. D

    New SBA3+Buffer Tube

      1. For Sale
    • $110
    • Portland
    • Oregon
    Bought 1 too many last week and don’t want to deal with returns. Just asking for what I paid+shipping, thanks
  5. S

    Odin Works Zulu 2.0 Adjustable Stock Kit - Blue

      1. For Sale
    • $110
    • Tualatin
    • Oregon
    Odin Works Zulu 2.0 Adjustable Stock and Padded Buffer Tube with Sling Attachment End Plate Blue Used with minor cosmetic marks Asking $110
  6. eldbillbo

    Ar15 A2 Buttstock assembly New condition complete $70

      1. For Sale
    • $70
    • Oregon City
    • Oregon
    Like new never mounted no storage ware complete with buffer tube, buffer, spring and screw. Its not a colt though but comparable quality.
  7. BRDA

    Magpul MOE Rifle Stock and Receiver Extension Tube - AR-15

      1. For Sale
    • $90
    • Federal Way
    • Washington
    For sale is a lightly used Magpul MOE rifle length fixed stock in black. Comes with a Brownell’s rifle receiver extension tube ($40 value). Also, includes a Magpul Type 1 rear sling QD point add-on ($15 value).
  8. asiparks

    A1 or A2 extension, spring and buffer

      1. Want to Buy
    • portland
    • Oregon
    looking for someones cheap n cheerful old take offs- 6061 or 7075
  9. Mitch W

    Odin Works SB-PT & Sig SB-15 pistol brace (reduced price, again)

      1. For Sale
    • $90
    • Vancouver
    • Washington
    I have a Sig SB15 pistol brace (like new) as well as an Odin Works SB-PT (tube has a small/light scatch). I wish to sell as a set. The SB-PT allows you to set where the SB15 brace sits on the tube and keeps it from rotating. Asking $90 for everything. I can not find the receiver end plate, but I...
  10. ScottInPDX

    NIB Aero Precision M5 308 Carbine Buffer Tube Kit

      1. For Sale
      2. For Trade
    • $50
    • Tualatin
    • Oregon
    New in box, plastic packaging never opened. I was a bit impulsive when I bought this and changed my mind about the buffer & stock system I want. Will trade straight across for an excellent condition (but not necessarily NIB) Aero Precision M5 308 rifle length buffer kit. Price is firm, already...
  11. dbg19

    AR Parts - Aero Buffer Tube - CMMG A2 Grip - S&W Stock - S&W A2 Flash Hider - S&W Carbine Handguard

      1. For Sale
    • $15
    • Salem
    • Oregon
    I have a few AR parts that are all in brand new, unused condition. Aero Precision 6 Position Mil-Spec Buffer Tube (tube only) - Sold CMMG A2 Grip - $5 Smith & Wesson A2 Flash Hider - $5 Smith & Wesson Adjustable Stock - $10 Smith & Wesson Carbine Handguard (no heat shield) - $5 Take all for $15...
  12. dmmv

    AR-15 Hydraulic Recoil Buffer (new)

      1. For Sale
      2. For Trade
    • $75
    • NW Portland
    • Oregon
    New in box, AR-15 Enidine hydraulic recoil buffer. Would trade for / towards a nice ambidextrous charging handle or other AR parts, pistol mags etc. Model # 22461-BR, or model 380841 on Midwayusa
  13. Tht_guy_josh

    SPARE PARTS DUMP

      1. For Sale
      2. For Trade
    • $70
    • beaverton
    • Oregon
    Or trade for a glock drum mag or other things
  14. S

    Looking for a milspec carbine buffer tube

      1. Want to Buy
      2. Want to Trade For
    • Vancouver
    • Washington
    Only need the tube... milspec. carbine. That is all. Have trade options or I have cash.
  15. 1775usmc

    KAK brace and tube

      1. For Sale
    • $20
    • Sherwood
    • Oregon
    KAK industries pistol brace and buffer tube. Used but in good condition.
  16. UnionMillsNW

    AR Grip, Charging Handle & Buffer Tube

      1. For Sale
      2. For Trade
    • $10
    • Salem
    • Oregon
    Hey Folks, Title says it all. I have a standard AR-15 Charging Handle, A2-Style Grip(with attachment screw), and buffer tube. A2-Style Grip is in great shape. Charging Handle shows some light wear but functions great Buffer tube has good screw threads and works great. Has some wear on the butt...
  17. CLee0507

    .

      1. For Sale
    • Newberg
    • Oregon
    .
  18. S

    AR Pistol buffer tube assembly, Complete $35

      1. For Sale
    • $40
    • Vancouver
    • Washington
    Lightly used AR pistol buffer assembly Tube, standard end plate (not pictured), standard recoil spring and buffer all included, also has an FDE textured rubber cover on the tube $35 Located in Vancouver, can meet in PDX sometimes and will ship within the PNW for another $5 Just to reiterate...
  19. K

    New and unused firearms accessories

      1. For Sale
      2. For Trade
    • Smokey Point
    • Washington
    -firefield laser/light combo - sold -AR skeleton grip tactical dynamics - sold -m1a metal parts kit - sold -PMACA chassis lightweight build - sold -(1) UTG bipod and (2) unknown name brand bipods - sold - firefield red dot - sold The items are for sale for the listed price, or for trade. If...
  20. Liberty19

    WTS OR  Aero buffer tube w/BCM QD endplate and castle nut

    $20 shipped PayPal friends and family Very lightly used
Oregon's Indoor Shooting Range
Cerberus Training Group
Optics Planet
Southwest Firearms Forum
Midway USA
Bi-Mart
Bear Creek Arsenal
Brownells
Collectors West Gun Shows
Sporting Systems
Back Top