The Shorty Stock is a prime example of Q LLC's innovative designs and contemporary firearm style. Compatible with AR/M4 receiver sets and bolt carrier groups the Shorty Stock offers a low profile design that's ideal for minimalist AR builds. The stock can be adjusted in two positions and comes with a recoil spring rated for 5.56 NATO/.300 Blackout.Features:Compatible with AR/M4 receiver sets and bolt carrier groupsLow profile constructionTwo position adjustments5.56 NATO/.300 Blackout rated recoil springNOTE:NOT compatible with the Honey Badger