FN SCAR 15P VPR 5.56 7.5 in. – Proven Short Stroke Piston Pistol

Description

The FN SCAR 15P VPR 5.56 is the SCAR receiver cut down to pistol length. FN kept the short stroke gas piston, the hammer forged chrome lined barrel and the monolithic aluminum upper, then shortened the whole thing to 19.75 inches and 5.65 pounds.

That combination is unusual. Most 5.56 pistols this short are direct impingement, which means gas and carbon are vented straight back into the receiver at the worst possible dwell time. The FN SCAR 15P VPR 5.56 runs a piston instead, so the fouling stays forward and the bolt carrier stays comparatively clean.

What the FN SCAR 15P VPR 5.56 actually is

• A 5.56x45mm NATO semi-automatic pistol built on the SCAR receiver, part number 38-101240 in black.
• A short stroke gas piston operating system rather than direct impingement.
• A 7.5 inch hammer forged, chrome lined, free floating barrel with a three prong flash hider.
• A hard anodized monolithic aluminum receiver with MIL-STD-1913 accessory rails at four positions.
• A Picatinny stock adapter at the rear rather than a brace, which is what VPR denotes in FN numbering.
• A thirty round magazine supplied, feeding from the standard STANAG pattern. Overall length 19.75 in., weight 5.65 lb.

Why the piston matters more at 7.5 inches than at 16

• In a direct impingement gun, gas travels back down a tube into the carrier. Shorten the barrel and the gas arrives hotter, dirtier and at higher pressure.
• The FN SCAR 15P VPR 5.56 vents that gas at the block instead and drives the carrier with a rod, so the receiver stays cooler and the carbon stays where it can be cleaned easily.
• Short barreled direct impingement 5.56 guns are also the ones most sensitive to ammunition and to suppressors. A piston system widens both windows considerably.
• The trade is weight out front and a higher price, which is precisely why most makers do not do it at this barrel length.
• FN has been building this operating system for military contracts for twenty years, so the piston here is not a retrofit.

FN SCAR 15P VPR 5.56 specifications

• Caliber: 5.56x45mm NATO
• Operating system: Short stroke gas piston, semi-automatic
• Barrel: 7.5 in., hammer forged, chrome lined, free floating
• Muzzle device: Three prong flash hider
• Receiver: Hard anodized monolithic aluminum
• Rails: MIL-STD-1913 at four positions
• Rear: Picatinny stock adapter fitted, no brace or stock
• Capacity: 30 rounds, STANAG pattern magazine supplied
• Overall length: 19.75 in.
• Weight: 5.65 lb.
• Grip: Black polymer, ambidextrous controls
• Item number: 38-101240
• Configuration: VPR, black

Feeding and outfitting the FN SCAR 15P VPR 5.56

FN publishes the factory sheet on its own site if you want the manufacturer numbers next to ours: the SCAR 15P product page lists the same barrel, receiver, overall length and weight printed above, and confirms that 38-101240 is the black 30 round VPR configuration.

• Magazines are the easy part. Magpul lists the PMAG 30 AR/M4 GEN M3 as compatible with STANAG 4179 platforms including the SCAR, so the cheapest magazine on the shelf is also the right one.
• For practice, Federal 5.56 NATO 55 grain FMJ is the standard load and the sensible thing to feed it in volume.
• Short barrels lose velocity, and 55 grain bullets depend on velocity. If you intend to use the FN SCAR 15P VPR 5.56 for anything serious, test a heavier bonded or barrier blind load and see what it groups.
• There are four rails. That is an invitation to hang too much on the gun. A light and a sling point is usually all a 5.65 pound pistol should carry.
• Expect noise and flash. A 7.5 inch 5.56 with a flash hider is loud in a way a carbine is not, and indoor practice without hearing protection is not an option.

A word on configuration and the law

This is a pistol. It ships with a Picatinny stock adapter at the rear and no brace and no stock, and that is how it must stay unless you go through the process of registering it as a short barreled rifle. MAG5 does not sell NFA items, so if that is your plan it runs through a dealer who handles those transfers and requires ATF approval before anything is fitted.

FN also builds this gun in a braced configuration under a different part number. If a brace is what you are after, ask us rather than buying the FN SCAR 15P VPR 5.56 and fitting one yourself, because the paperwork and the part number both matter. Rules on braces have changed more than once, so confirm the current position before you commit either way.

Why the FN SCAR 15P VPR 5.56 earns its place

• A piston driven 5.56 at 7.5 inches is rare, and the FN SCAR 15P VPR 5.56 is one of the very few. Almost everything else this short is direct impingement and shows it after a few hundred rounds.
• The monolithic upper means the optic rail and the barrel share one piece of aluminum, so zero does not wander when you take the handguard off.
• Ambidextrous controls are standard rather than an upgrade, which matters on a gun likely to be fired from awkward positions.
• At 19.75 inches overall the FN SCAR 15P VPR 5.56 fits in a bag that does not look like a gun bag, which is most of the reason people buy this size.
• The FN SCAR 15P VPR 5.56 feeds standard AR magazines, so the most expensive consumable on the platform costs the same as it does for everybody else.

The FN SCAR 15P VPR 5.56 is for the buyer who wants a SCAR and does not want to register a short barreled rifle to get one this size. It suits a vehicle or bag gun, a home defense gun where length matters more than velocity, and the collector who wants the piston system in its most compact form.

Be realistic about ballistics. A 7.5 inch barrel gives up a great deal of velocity against a 16 inch one, and 5.56 is a cartridge that depends on velocity to do what it does. Inside a house that is academic. At two hundred yards it is not. Every firearm on this page ships to your chosen FFL for transfer and pickup.