Barrel Length: 20 in - Overall Length: 40 in - Weight: 8.4 lb - Barrel NEMO 20 416R stainless steel barrel 1:7 twist - Receivers NEMO matched billet upper and lower receiver set 7075-T6 aluminum with full ambi (safety mag and bolt release) manufactured in-house. - Handguard / Forearm 15 6061 extruded aluminum M-LOK modular rail with slim design and steel QD rotation limited mounts manufactured in-house - Bolt High Pressure bolt 9310 heat treated Cryo