Spectre Ltd. WS-MCR SFG 5.56NATO 18.7″ Barrel Black


Out of stock

SKU: SLD-MCR556GFS Categories: , Tag:

The WS-MCR has been designed to be available in 5.56 NATO, 7.62 x 39 or .224 Valkyrie. We like the original AR180B “concept”, so we went back to it and started fresh. We stayed with a modern CNC aluminum lower receiver. No need to reinvent the wheel, so we used that lower although we did add one very major improvement. We built in a rear take down pin, this eliminates the movement often found between the upper and lower and also strengths and stiffens the complete rifle.

The SFG takes inspiration from paratrooper rifles, featuring a lightened, free floating M-LOK handguard and side-folding skeleton stock.  Inspired from the near bomb-proof Galil stock, this aluminum stock has a slimmer, rigid, and heavier profile than its base configuration.  These factors work together to make the SFG a handy firearm to carry around and transport.  Furthermore, the more rearward center of balance along with the additional weight allows for easier handling and less felt recoil while firing.


  • Non-Restricted in Canada
  • Side Folding Aluminum G-Mod Stock
  • Ambidextrous Safety
  • Left-Side Charging Handle
  • Integral M1913 Type Sight Rail
  • Skeletonized Free-Float M-LOK with M1913 Top Rail Handguard


Canada Legal Classification Non-Restricted Action Semi-Auto
Lower Receiver 6061-T6 Aluminum Trigger Type AR-15
Furniture M4 A2 Pistol Grip, G-Mod Stock Safety Ambidextrous
Magazine (1) 5 Round Upper Receiver 6061-T6 Aluminum, QPQ Nitrided Steel Wear Plates
Gas System 1 Piece Piston, Carbine Length Sights None
Handguard Material Aluminum Barrel SAE 4150 HT Alloy
Twish Rate (in) 1:08 Muzzle Device A2 Flash Hider, 1/2 x 28 Thread
Overall Length (in) 39.0 Folded Length (in) 30.75
Weight (lbs) 8.8 Finish Type III Hard Black Anodized

Additional Information:

Again, looking at the original AR180B rifle, we followed their lead and in the new WS-MCR we once again have both the cam pin and the charging handle travelling on steel. To achieve this, we added two steel plates: one inserted on each side of the upper receiver which is CNC machined from aluminium. This added to the cost, but we consider the advantages well worth the extra expense. We also carried out some improvements to the bolt carrier. This resulted in a much smoother action and has minimised the wear associated with a hard steel component running on soft aluminium.

As the WS-MCR is available in your choice of three calibers we had to revise the gas system, again this is different to anything that has been marketed to date. We have spent several months fine tuning the gas system and this has resulted a soft positive ejection. Another new feature not found on any previous production rifle of this general type is that we have added a case deflector. After several thousand rounds, we have avoided the ugly scarring that ejected cases can inflict on the receiver.

The hand guard which is free floating features a 1913 type accessary rail on the top. We have chosen a long 15 inch handguard. The handguard will be required to be slipped off in order to clean the gas system. The gas cylinder plug requires a standard ¼ inch wrench or socket for removal. Any further disassembly or modification may void the warranty.


Wolverine Supplies warranty the WS-MCR rifle to be free from defects in material and workmanship for a period of one year from the initial retail purchase. The purchaser must be able to provide proof of purchase if requested.

*Note:  Stock picture may not currently reflect the actual item in stock.  If there is specific criteria that is not listed in the specs, please inform us and we will determine if current inventory fulfills the criteria.


Manufacturers, importers, suppliers, and distributors may make changes to their products without fanfare. Such changes can lead to discrepancies between the advertised product and the actual product in inventory. While International Shooting Supplies Ltd. endeavors to correctly describe the actual product in inventory, we will not be responsible for unintentional inaccuracies in text and images of the advertised product.



5.56 Nato



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