PTR 91 51P PDWR .308 Win 8.5" MP5-Style Pistol, Black, 20-Round Capacity

SKU:
120921062
|
UPC:
897903002275
$1,746.90
$1,765.00
(You save $18.10 )
Current Stock:
Capacity-Rounds:
20
Caliber-Gauge:
308 Winchester/7.62x51 NATO

The PTR 91 51P PDWR .308 Win 8.5" MP5-style pistol delivers modern rifle caliber firepower in a compact, maneuverable platform. Built on the proven delayed blowback roller-lock system, this short-barreled powerhouse chambers .308 Winchester and feeds from 20-round magazines, making it a serious option for shooters who want precision rifle performance in a pistol-length package. Whether you're setting up a truck gun, a home-defense rifle, or a specialized range rig, the 51P PDWR cuts through the noise with genuine engineering—not compromise.

The 8.125-inch match-grade bull barrel is threaded 5/8x24, ready for suppressors or the included H&K Navy-type flash hider. The MP5-inspired ergonomics include a wide polymer handguard and polymer trigger group that should feel familiar if you've run modern tactical rifles. At 7.8 pounds and 23.5 inches overall, it's built to move with you, not against you. The machined butt cap is drilled and tapped for an AR15 tube-style stock adapter, giving you flexibility to configure the platform to your needs. You get a paddle magazine release for speed, welded picatinny rail for optics, and sling swivel for field carry.

This is a rifle-caliber pistol for shooters who understand what that means—it's not a carbine with the stock removed, it's a purpose-built delayed-blowback design proven in decades of international service. The PTR 91 line honors that legacy while keeping things straightforward: solid materials, no unnecessary features, and reliability that doesn't depend on hype.

Key Features

  • Delayed blowback roller-lock system proven for reliability and consistency
  • Match-grade 8.125-inch bull barrel threaded 5/8x24 for suppressors and muzzle devices
  • .308 Winchester caliber with 20-round magazine capacity
  • MP5-style ergonomics: wide polymer handguard, polymer trigger group, paddle magazine release
  • Compact 23.5-inch overall length and 7.8-pound weight for maneuverability
  • Butt cap drilled and tapped for AR15-pattern stock adapters
  • Welded picatinny rail for optics and tactical accessories
  • Sling swivel for field carry
  • H&K Navy-style flash hider included

Specifications

Caliber.308 Winchester
ActionDelayed Blowback Roller-Lock
Barrel Length8.125 inches
Barrel ProfileMatch-grade bull barrel
Barrel Threading5/8x24
Overall Length23.5 inches
Weight7.8 pounds
Magazine Capacity20 rounds
HandguardWide polymer
Trigger GroupPolymer (MP5-style)
Magazine ReleasePaddle
Stock InterfaceButt cap drilled and tapped for AR15 tube adapter
RailWelded picatinny
Muzzle DeviceH&K Navy-type flash hider (included)
FinishBlack

Frequently Asked Questions

What's included in the box?

The PTR 91 51P PDWR comes with the pistol, a 20-round magazine, and an H&K Navy-style flash hider already fitted to the muzzle.

Can I add a brace or stock to this pistol?

The butt cap is drilled and tapped to accept an AR15 tube-style stock adapter, which allows for configuration options. Always verify your build complies with federal and local regulations before making any modifications.

Is this barrel compatible with suppressors?

Yes, the barrel is threaded 5/8x24, a common thread pitch for .308 suppressors. The H&K Navy-style flash hider is already installed.

What's the difference between the roller-lock system and direct impingement?

The delayed blowback roller-lock system cycles by design rather than relying on gas tubes or pistons. This PTR 91 platform uses a proven roller-lock mechanism that's been in service worldwide. It's known for smooth operation and consistent function across conditions.

Firearm Shipments:

To buy rifles or shotguns, you must be 18 years old, and for handguns, actions, or receivers, the minimum age is 21. By placing an order for this firearm, you confirm that you are the legitimate transferee/buyer, meet the legal age requirements, and comply with all Federal, State, and local laws and regulations necessary to purchase this firearm.

We only ship firearms to valid Federal Firearms License (FFL) holders. At checkout we provide a FFL locator for your convenience.

We will need a copy of the FFL’s license to facilitate the process, kindly request your dealer to email us a copy of their FFL, as we cannot dispatch the firearm until we receive this document. It is imperative for the buyer to choose their FFL dealer, ensure they are willing to facilitate the transfer, and have them email their FFL copy to BOSQUE Outdoors. To avoid any confusion, the customer's name or order number must be mentioned in the email containing the FFL.

Email: [email protected]

  • Prior to placing an order, it is the buyer's responsibility to understand and adhere to their state's firearm regulations.
  • The buyer should verify with their receiving dealer that the chosen firearm is legally permissible in their state.
  • The buyer is accountable for any transfer fees or background check charges imposed by the receiving dealer. If the designated dealer declines to accept the firearm delivery, the buyer assumes responsibility for shipping costs to retrieve the firearm and resend it to an accommodating dealer.
  • Handguns will be shipped using air transportation, while long guns can be shipped using ground methods. If your order includes a mix of firearm and non-firearm items, BOSQUE Outdoors will send the firearm(s) to your selected FFL dealer and the remaining non-firearm items to your billing address.
  • Firearms cannot be returned to BOSQUE Outdoors; please contact the manufacturer for warranty claims.
  • Firearms refused by the FFL Dealer or which cannot be transferred due to a failed background check are subject to a $75 restocking fee plus 10% of the purchase price.