***This is a proprietary item designed to work with KAK mini buffer and KAK flat wire spring only!!***


We are listing these for people who want to use these for folding receiver extensions to achieve better length of pulls with AK47, Galil, and similar.


We take no responsibility for any issues that may occur for mixing and matching buffers or springs that are not designed for this proprietary KAK mini buffer tube, only KAK Industry produced flat wire buffer spring and mini buffer are designed to work with this item


The M4 stock is taken down from just over 6.5" to 5", Mini Buffer Tube is only 5.25" in length from end of the receiver when installed. The Mini Milspec M4 Stock can collapse completely flush in the last adjustment hole on the buffer tube making the front of the stock flush with the castle nut.


Mini Milspec Buffer Tube with Mini M4 Stock Installed, collapsed configuration- 5 5/8” from back of receiver

Normal Milspec M4 stock with 6 position buffer tube- 7 1/8”

Magpul SL-M will collapse flush with castle nut in 2nd adjustment slot, .5" longer than KAK Mini M4 Stock


  • Proprietary Mini 5 Position Buffer Tube extends only 5.25" from the rear of the receiver. Buffer will accept Milspec parts and stocks.
  • Material- 7075 Impact Extrusion
  • Length- 5.75"
  • Weight- 3.1 oz
  • Finish- Black Military Hard Coat Anodized
  • Positions- 5
  • Uses standard milspec end plate and castle nut


KAK Industry, Mini Buffer Tube, Proprietary, Fits AR-15 Rifle

  • Brand: KAK Industry
  • Product Code: KAK-515-0604-006
  • Availability: In Stock
  • $51.99 USD