Our Aeroprecision SPR-2 lowers are fully compatible with Armalite uppers and other parts.
All AR15 lower parts kits (LPKs) will fit into a Noveske or other compatible Armalite lower receiver with the additional of 3 to 4 extra parts: 1. bolt stop catch
, 2. pivot pin
, 3. take down pin
, and 4. magazine catch
. However, we have found that when using the Bullet Button with the Noveske N6, the standard AR15 magazine catch works great and the AR10 Magazine Catch is not necessary.
The Aeroprecision SPR-2 lower receivers will also accept most regular AR15 buttstocks including the standard A2 buttstock and collapsible stocks. The A2 buttstock must use the AR10 A2 Buffer
and AR10 A2 Action Spring
. Collapsible stocks require a longer receiver extension and we recommend you buy a complete collapsible buttstock kit
This information only applies to Armalite compatible lower receiver like the Noveske N6 and Aero SPR-2. These parts are not compatible
with the Fulton or POF .308 lower receivers.