Dont think i can use this for a .308 716 sig can I?

I tried zeroing my ruger american in 308 and its definitely not stable enough

Is this item sufficient for use with a bolt action .243

Of course, that's what is made for. I use it on both of my Savage bolts, 6.5 and 243. Holds your rifle WAAAY steadier than you can. Makes sighting in a new scope easy peasy.

Can you hold and zero an ar-15 and ak c39v2 moe, both with noncollapsible/pinned stocks?

Yeah this will work great for that!

Will it work with an Ruger AR 556?

It should work and the center pad removes to allow for the magazine. But to be honest I would look at the Caldwell Stinger rest.

Matrix Rest Modular Frame | Desertcart Spain

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Fully operational. Shipping worldwide, on schedule.Customs & duties included in the price

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€ 230.21

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Sold byAmazon SpainDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

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Description

🎯 Elevate your aim, streamline your setup, and never miss a shot!

DAMAGE FREE SUPPORT - Non-marring cradles protect your firearm’s finish while providing rock-solid stability.
INTEGRATED GEAR STORAGE - Smart side and front compartments keep your range essentials organized and within reach.
VERSATILE U CHANNEL FRAME - Hollow design clears detachable mags and lever actions—ready for any shooting scenario.
CUSTOM FIT FOR EVERY FIREARM - Modular frame adjusts up to 4.5" for rifles or detaches for pistols—precision comfort guaranteed.
EFFORTLESS ELEVATION CONTROL - Spring-loaded front rest lets you dial in perfect height with one hand—speed meets accuracy.

The Caldwell Matrix Rest is a lightweight, modular shooting rest designed for both rifles and pistols. Featuring up to 4.5 inches of length adjustment, a spring-loaded front elevation system, and a durable U-channel frame, it offers unmatched stability and versatility. Built-in storage compartments keep your range accessories handy, while non-marring cradles protect your firearm’s finish. Trusted by thousands, it’s the perfect blend of precision, convenience, and rugged durability for serious shooters.

Specifications

ASIN	B003FSQOTU
Best Sellers Rank	#20,961 in Sports & Outdoors ( See Top 100 in Sports & Outdoors ) #8 in Hunting & Shooting Gun Holders
Brand	Caldwell
Brand Name	Caldwell
Color	Green
Customer Reviews	4.5 out of 5 stars 2,794 Reviews
Global Trade Identification Number	00661120016007
Grip Material	Rubber
Included Components	Shooting Rest
Item Highlight	Rifle and Pistol Rest, Adjustable Elevation & Length, Portable, Built-In Storage, Polymer
Item Type Name	Matrix
Item Weight	1 kg
Leg Style	Bipod
Manufacturer	American Outdoor Brands
Manufacturer Part Number	101600
Material	Plastic
Material Type	Plastic
Maximum Height	15 inches
Minimum Height	15 inches
Model Number	101600
Number of Items	1
Number of Packs	1
UPC	661120016007 076683094803
Unit Count	1 Count
Warranty Description	Limited Lifetime
Weight Capacity Maximum	6.8 pounds

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