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B5 Systems Enhanced SOPMOD Stock - Black

Manufactured by B5 Systems
SKU: SOP-201-01-BLK
MPN: SOP-1074
Manufactured by B5 Systems
32 Reviews

In Stock

Orders of non-FFL items will ship same day if ordered before 3:30pm CST (M-F). FFL orders will ship within 5 business days if transfer details are provided.

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Introducing the B5 Systems Enhanced SOPMOD Buttstock, designed to meet the unique needs of Special Operations Forces and firearm enthusiasts alike. This MILSPEC buttstock is constructed of high-grade materials and comes finished in Black. It easily fits onto a MILSPEC Receiver Extension (Buffer Tube) and provides an exceptional cheek weld and storage capabilities.

The B5 Systems Enhanced Sopmod Buttstock takes the original design of the SOPOD stock and adds popular features like an ambidextrous QD sling swivel mount and color-matching hardware for a sleek, streamlined look. With its ergonomic design, you’ll be able to fit it to your rifle with ease and enjoy the comfort and stability of a quality buttstock.


  • Compatible with MIL-SPEC buffer tubes
  • Exceptional cheek weld
  • Storage capable
  • Ambidextrous QD disconnect sling swivel mount
  • Color-matching hardware
  • Made from durable materials
  • Black

The B5 Systems Enhanced Sopmod Buttstock is the perfect choice for any shooter looking for a reliable and comfortable buttstock with all the features they need. Get yours today and experience the difference.

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BrandB5 Systems
Compatible Make
Compatible Model
ManufacturerB5 Systems
Sling MountMultiple - See Description
StorageInternal Storage
Weight14.4 Oz
  • B5 Systems Stocks
California Prop 65 warning

 WARNING: This product can expose you to chemicals, which are known to the State of California to cause Cancer and Reproductive Harm. For more information go to www.P65Warnings.ca.gov.

Ratings & Reviews

32 reviews


Excellent stock. PERIOD.


Do you like the LMT SOPMOD? How about a VLTOR iMOD? Well save some dough and get this stock instead. I actually like the B5 stock better than the others. I have been building rifles for years, especially ARs, and I used to buy the "Gucci" stuff because of the name. Now, I just want quality stuff that doesn't break the bank. This is an awesome stock no matter what the price. If it was $250 I would still pick this over the LMT or VLTOR. But, thank God its not!



Every bit as good as the LMT stock in design, function and durability, but at a more affordable price. Big thanks to Primary Arms for offering such a great product for building better ARs.



Excellent piece of kit.

Great product!


For the price point and excellent product. Tight fit to my mil spec buffer tube. Excellent cheek weld and nice storage space.

Fast Service


Got my items extremely quickly and everything was exactly the way it was presented online! Awesome prices too.

Awesome stock


Great feel and easy to get a consistent check weld on.



Great stock! the only down side is that it is a little on the heavier side (thats why i give 4 stars). with that said... Very sterdy, no movement, allows for a comfortable and nice check weld. Other then the weight, I love this stock and PA.com sent this out super fast!!! Great company to deal with...



Great stock, whole order shipped the same day it was ordered. Had the stuff I needed in less than 2 days, couldn't ask for better service.

Sopmod B5


Great stock. I've always loved these type of crane stocks, as they provide a great cheek wield. It's solid and battle proven. I currently have it on a Block II clone and will not be taking it off. Only complaint is that it does slightly (and I mean very subtly) moves when pushed against. However, it stays rock solid when shouldered and runs like a champ. Also, its a great deal for what you get.

Really nice stock!


I haven't finished building the whole rifle yet but I am impressed with the B5 stock and I am very anxious to take it to the range.