Description
The Pit Viper Pit Stock is Strike Industries' answer to the wobble and rattle most folks just learned to live with on collapsible AR stocks. Instead of clamping around a standard buffer tube, it interfaces with a keyed receiver extension so you get extra points of contact and a fitted, dead-solid lockup. The whole thing tips the scale at right around 4 oz thanks to a skeletonized, low-profile build, so it shaves weight without giving up toughness. Strike machines it from 6061-T6 aluminum and rates it lighter than a mil-spec M4 stock but roughly twice as durable.
What Sets the Pit Viper Pit Stock Apart
The magic here is the T-slot mounting system that mates to the Strike Industries 7-Position Advanced Receiver Extension. That proprietary interface is what kills the rattle entirely and gives you that rock-solid feel whether you're moving fast or bracing off cover. The orbital stock shape, first seen on Strike's PDW stock, is built to give you a secure, natural cheekweld even in awkward spots like tight vehicle work or close-quarters positions. The rear profile is designed to grab onto your gear rather than slip off your shoulder.
Adjustable or Fixed, Your Call
This is really a two-in-one setup. You can run it as a three-position adjustable stock with a length of pull that spans 10 to 12 inches, or lock it down solid as a fixed stock using the included mounting screw. Swapping between the two only takes a few minutes, which makes it easy to dial in a compact, lightweight build exactly how you want it.
Sling-Ready Right Out of the Package
Ambidextrous QD swivel sockets are built into both sides, so lefties and righties can rig a sling without adding any extra hardware. Pair the Pit Viper with a short-barreled or lightweight AR-15 or AR-10 build and you've got a genuinely compact package that still shoulders comfortably. Just remember it's designed around Strike's own receiver extension, so plan your build around that pairing.
Key Specifications
- Manufacturer: Strike Industries
- Manufacturer Part Number: VIPERPITBK
- UPC: 708747547856
- Product Type: Buttstock
- Color: Black
- Material: 6061-T6 Aluminum with Steel Hardware
- Finish: Anodized
- Weight: Approximately 4 oz
- Length of Pull: 10 in to 12 in
- Adjustment: 3-position adjustable or fixed
- Sling Mount: Ambidextrous built-in QD swivels
- Compatibility: Strike Industries 7-Position Advanced Receiver Extension (AR-15 / AR-10)
- Buffer Tube Included: No
What’s Included
- Pit Viper Pit Stock (Black)
- Fixed Position Mounting Screw
- (2) Rubber Sliders
Frequently Asked Questions
Does the Pit Viper Pit Stock work with a standard AR buffer tube?
No, it's not compatible with standard mil-spec receiver extensions. The Pit Viper uses a proprietary T-slot interface that mates specifically to the Strike Industries 7-Position Advanced Receiver Extension. You'll want to plan your build around that tube to get the rattle-free lockup it's known for.
Is a buffer tube included with the Pit Viper Pit Stock?
No, the stock ships on its own without a receiver extension. You'll need to pick up the Strike Industries 7-Position Advanced Receiver Extension separately, since that's the only tube this stock is designed to run on.
Can I run the Pit Viper as a fixed stock instead of adjustable?
Yes, that's one of its best tricks. Using the included fixed position mounting screw, you can lock it down solid, or run it as a three-position adjustable stock instead. Switching between the two setups only takes a few minutes.
How much does the Pit Viper Pit Stock weigh?
It comes in right around 4 oz thanks to its skeletonized design. Strike rates it as lighter than a mil-spec M4 stock while being roughly twice as durable, which makes it a solid pick for lightweight and short-barreled builds.




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