BudsGunShop.com - Does it have a picatinny rail on the top?

Yes, this model does not have the receiver picatinny rail.

Also this is from their site brecofirearms.com/product.ptr-ptr-91kpf-308-16-para

Hi Weston, the photo is correct but here are the specs. The PTR-91 Classic Semi Automatic Rifle features a iconic look and design. With the inspiration of the military rifles as a starting point, this battle rifle provides you with the proven true roller-lock weapons platform design. Developed using the same prints and tooling used by the H&K licensed FMP plant in Portugal, PTR is proud to deliver a reliable G3-Type rifle. This particular model features the classic 18" Heckler & Koch profile tapered barrel and slimline hand guard. The rifle also features the H&K Navy Type polymer trigger group, standard fixed stock and one 20 round magazine.
Specifications and Features:
PTR Industries PTR 91 Classic Black PTR108
Semi Automatic Rifle
.308 Winchester (Accepts 7.62 NATO)
18" H&K Profile Tapered Barrel
Flash Hider (removable and threaded 5/8x24)
20 Rounds
Delayed Blowback Roller-Locking Action
H&K Slimline Polymer Handguard
Classic H&K NAVY Polymer Group Housing
Fixed Stock
All Black Furniture
Black Powder coat Finish
Matte Black