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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.

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Recent contents
  1. Liberty19

    WTS OR  BCM MOD 0 stock and buffer tube assembly w/KAC SR-15 carbine buffer w/spikes pistol grip

    Trade for 5.56 ammo Stock, buffer tube, spring, castle nut and endplate are BCM. Spikes pistol grip KAC buffer-SOLD!!! All parts are in excellent condition. PRICE DROP!! $50
  2. Liberty19

    WTS OR  BCM buffer tube castle nut and endplate

    Reduced $20
  3. Jcon268

    WTT OR  Rifle buffer tube for pistol buffer tube

    My ignorance brings me here today after realizing that I purchased a rifle buffer tube for my pistol build and not the correct one. Beyond returning, so here I am. UTG tube brand new out of package. Want to attach a brace and so need the appropriate tube. No buffer or spring swap, just the...
  4. Jonathan

    WTS OR  AR Pistol Buffer Tube and Spring

    New unused AR 15 Pistol buffer tube and spring. Asking $40 OBO. Cash only, no trades. 971-246-6347. In Clackamas
  5. R

    WTB OR  Milspec buffer tube kit

    I bought a milspec stock by accident when I have a commercial tube so I am in need of a milspec buffer tube kit to replace it lmk what you got
  6. JohnH

    WTS OR  Shockwave Pistol Blade and Buffer Tube

    Installed once and removed. Like new as seen in pictures blade and KAK Shockwave Buffer tube. Both pieces for $50
  7. Liberty19

    WTS/WTT OR  BCM grey stock grip trigger guard and bcm QD end plate w/LMT buffer tube Spikes T2 buffer &spring

    $130 or Partial trade for black BCM grip and triggerguard + $100
  8. faron

    Pistol buffer tube threads too short to engage retaining pin/my fix

    Hopefully others will find this helpful if they run into the same issue. So I recently just finished my first ar pistol in 9mm. I've always loved and wanted the mp5 but they, and their 9mm variants are usually far too expensive for my taste, and the .22s, though fun, just don't have the umph...
  9. aljames

    WTS OR  KAK SB-15 buffer tube kit

    SOLDLike new, I bought it 2nd hand about a year ago [here I believe] and never installed. Comes with spring, carbine buffer, new castle nut and new std end plate. SOLD$40 shipped via USPS priority insured with tracking. USPS money orders or F&F paypal or add 3%. Cross posted on other forums...
  10. S

    WTS OR  Mft stock/grip and buffer tube

    I have a like new mft grip and stock and comes with milspec buffertube. $60
  11. Joe Link

    Differences between AR15 receiver extensions (buffer tubes)?

    I need to pick up a couple lower receiver extension kits for the Northwest Firearms lowers I'm building and I'm trying to figure out if there's a right way and a wrong way to go in terms of quality or function. Any input? :)
  12. Nicholi2789

    WTS/WTT OR  MBUS front and rear, CTR stock & buffer assembly more.

    Hey guys, got some misc ar parts for sale. Never ended up using them. Would like cash, but would also consider trading for reloading supplies such as powder and bullets. (223, 9mm, 308 stuff mostly). First is a set of magpul gen 2 MBUS sights. Brand new condition. Decided to go FDE. $50 Next...
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