MK17 MRGG Patented.

mid-range gas Gun

6.5 Creedmoor, 7.62 x 51 NATO

The Mid-Range Gas Gun (MRGG) is based on the SWORD Defense Systems renown MK17 rifle. The MRGG is the SWORD Defense Systems submission for a 6.5 Creedmoor semi-automatic rifle for a USSOCOM requirement. Taking the specifications of the requirement and lessons learned from the rigorous testing regimen, SWORD Defense Systems has produced an ultra-accurate and reliable semi-automatic platform the MRGG-S (Sniper) that is capable of sub-minute accuracy with a variety of 6.5 ammunition. SWORD further expanded upon this and created the MRGG-A (Assault) a short barrel select-fire variant.  SWORD Defense Systems is proud to have added the MRGG to the Defense product line.


MRGG-S (Sniper)

The MRGG-S is a rear charging handle MK17 rifle chambered in either 6.5 Creedmoor or 7.62×51 NATO. It is available in 16-inch or 20-inch barrel variants.

MRGG-A (Assault)

The MRGG-A is a rear charging handle select-fire MK17 rifle chambered in 6.5 Creedmoor. It is available in 12.5-inch. 14.5″ Variation available upon request.



6.5 Creedmoor | 7.62 x 51 NATO

12.5″ Barrel 

WeighT:  8.10 lbs   

Length:   32.5” – 35.5”

16″  barrel:

Weight: 8.5 lbs

Length: 35.5” – 38.5”

20″  barrel:

Weight: 8.9 lbs

Length: 39.5” – 42.5”

MRGG-A: 12.5″,

MRGG-S:  16″  and 20″

Available in 14.5”  Variation

1:7.5 TWIST (1:8 Twist Available)  QPQ Nitride coating | OPTION FOR CERAKOTED BARREL 

Short Stroke Piston & Push Rod System

Safe, Semi-Automatic standard configuration

Select-Fire variant available upon request

Single-stage, Two-stage options

Fixed 12 O’clock rail, M-Lok compatible at 3/6/9 O’clock positions

Additional Options/Variations available upon request: 

Ambi Controls, Forward-Assist

M110 Lower Receiver Compatible

Supressor  Compatibility with CGS, Surefire, OSS, KAC 

Tri-Lock Rail System

Enhanced Bolt

Enhanced Bolt Carrier

Rear Charging Handle