• Mounts on a durable custom Receiver Extension tube (included)

• Accommodates carbine buffers and springs

• Enhanced lock mechanism

• 8 total positions

We have a large selection of stocks in inventory. 

To purchase this product, please go directly to our website: https://titan-ammo.com/magpul-ubr-gen-2-adj-stk-ar15-m4-blk/

To view our entire list of available stocks please go to https://titan-ammo.com/accessories/stocks/