The Primary Weapons System MK216 and MK116 use a long-stroke gas piston.
Bravo Company’s Mod 4 Gunfighter charging handle has an extended latch to make chambering a round quick and easy.
QD sling-swivel attachments mount to the bulkhead at the rear of the fore-end and allow attaching a sling on three sides.
The MK116 is festooned with a host of coveted tactical accessories, making it a versatile 5.56 NATO carbine.
PWS’ MK216 is chambered in 7.62 NATO and ships with a 20-round Magpul Pmag LR magazine.
The PWS long-stroke piston runs through the charging handle to the bolt-carrier assembly, adding to the carrier’s mass and increasing reliability without adding to the rifle’s part count.
An enlarged rear of the bolt-carrier assembly prevents it from tilting, eliminating a problem with some piston ARs.
A free-floating quad-rail fore-end includes a full-length top rail for mounting optics. All four rails terminate just beyond the gas block, allowing for tremendous versatility when attaching accessories.
Both the MK116 and MK216 have forward assists and angled brass deflectors.
Both PWS carbines retain the AR’s buffer spring in a fluted tube.
As with conventional ARs, a detent holds the spring in place.