Magpul "RSA" QD Rail Sling Attachment handguard The A4 model has a

The A4 model has a fixed rear stock with lots of battery room in its back

FPS is 300 w/

and optional quick detach sockets front and rear round out the external package

The KM4 SR7 provides operators with an adaptable weapon system with high maneuverability and speed

Fits in both the Black and Tan M9 A1 and A3 models of the full blowback model (2274310 and 2274303) from Umarex

Magpul "RSA" QD Rail Sling Attachment handguard The A4 model has aThe Magpul "RSA" QD Sling Attachment is perfect for anyone with top picatinny rail space who want to attach a QD point. Corrosion resistant finish Fits all standard 20mm rails For use with most QD sling points