Sons of Liberty Gun Works Buffer Tube Kit Features The Sons of Liberty Gun Works Buffer Tube Kit provides a 10-position buffer tube built to mil-spec dimensions ensuring compatibility with most commercial AR-15 and M4 pattern lower receivers and stocks. The 10-position adjustment range allows shooters to fine-tune length of pull for different body types armor setups and shooting positions. Included in the kit is a buffer along with an extra power spring giving builders the correct internal components to keep the action cycling reliably rather than needing to source these parts separately. This combination of tube buffer and spring in one kit simplifies a build that would otherwise require gathering several individual parts. A castle nut and end plate are also included covering the hardware needed to properly secure the buffer tube to the receiver extension threads. The matte black finish gives the kit a clean factory-correct appearance that matches most mil-spec AR builds. Sons of Liberty Gun Works designs its small parts to fit most mil-spec firearms making this kit a dependable choice whether building a competition rifle a home defense carbine or a general-purpose AR. Builders looking for a complete reliable buffer tube assembly in one package will find this kit covers everything needed for the job. Sons Of Liberty Gun Works Buffer Tube Kit Specifications Manufacturer: Sons Of Liberty Gun Works Model: Buffer Tube Kit Type: Buffer Tube Complete Assembly Compatible Hosts: AR-15 / M4 Color: Black Description: 10-Position Finish: Matte Includes: Buffer Extra Power Spring Castle Nut End Plate Available At: GrabAGun