Precision Rifles & Precision Rifle Chassis Systems
Building the lightest and strongest rifle possible
In March, KUIU founder Jason Hairston visited the Remington Custom Shop in Sturgis, South Dakota, where we presented him with a number of options for each component that will comprise the Ultimate Sheep Rifle. We discussed the pros and cons of each with regards to Hairston’s wants and needs for the gun. After hours of deliberation, here’s where we landed.
Remington Ultimate Sheep Rifle Action – Remington 700 Titanium; 8 oz.
Hairston opted for a titanium Model 700 action in 6.5 Creedmoor (more on the caliber choice in a future post). Remington’s custom titanium actions are so precisely machined, to such tight tolerances, that secondary blueprinting—a step required of nearly any factory action—is not necessary. The bolt will feature an M-16 extractor and dual ejectors, as well as a Badger Ordnance Mini Knob.read more
This Remington Defense RACS M40A6 USMC Chassis 86485 features a sturdy platform for precision shooting, 20 MOA full length picatinny rail, captive action screws, 3 sections of picatinny rail section plus one Harris bipod adapter and a folding RACS stock. The operator friendly RACS also features a free-float tubular design, fully featured front handguard, the ability to attach auxiliary rail sections to any of the seven facets of the octagonal handguard tube. The pistol grip is rubber with a good grip surface and excellent ergonomics. The pistol grip is interchangeable with standard AR grips if you would prefer something else.read more
The precision rifle world is awash in slick and high quality gear, but no chassis is more beautifully made or offers the features of the J. Allen Enterprises JAE-700 rifle chassis system. The most compelling feature is the adjustable magazine retention system that allows the shooter to bounce back and forth between AICS pattern and AW (Arctic Warfare) magazines. No chassis will better pair the AW double-stack magazine with a two-lug action than the JAE-700.read more
The SABER (folding rifle stock system tactical) Modular Rifle Chassis system was conceived in 2004 as a way to advance the functionality of modern bolt action rifles for tactical, competition, target and hunting applications. After more than seven years of intensive development, countless hours of engineering design, prototyping and testing; with input from experienced snipers, world champion competitive rifle shooters, and hunters Ashbury has to date been awarded 14 utility and design patents, with additional patents pending!
SABER modular rifle chassis’ are manufactured to ISO:9001-2008 standards principally from 7075-T6 aerospace grade alloys, advanced composites and lightweight high-strength carbon fiber materials. SABRE chassis’ are truly modular and designed to provide users with greater functionality and increased accuracy when installed on many popular right and left hand bolt action receivers.
Customers frequently comment about the adjustable ergonomic design which is singularly unique when compared to a traditional rifle stock and contributes to reducing felt recoil. These features allow shooters better control, shot follow through and enhanced long range accuracy across the entire caliber range from small to large caliber including the 50 BMG. You can upgrade nearly any sub-assembly and most individual components of the chassis using a common family of accessories on your home workbench or with the assistance of a trusted gunsmith. SABER®-FORSST® Modular by Definition…Performance Engineered by Design proudly Made in Americaread more
The Accurate Mag Chassis Systems have been designed and produced with high precision CAD/CAM programs and CNC machinery to high quality Military standards. All chassis systems are made out 6061-T6 aircraft grade aluminum for lightness with some high stress or high wear parts made out of steel. All aluminum parts are given a military grade Hard-anodize finish, the same process that is done to M4 upper and lower receivers. And, all steel parts either have a black oxide or a cerakote finish.read more
The Mossberg MVP LC combines the accurate MVP Rifle Platform with a lightweight MDT LSS Chassis, Magpul Stock, and an optional Vortex Optics Viper HS-T Rifle Scope.read more
Rifle Basix Remington Trigger ERV-3 K , Replaces X MARK PRO TRIGGER , “K” package, includes safety and bolt stop release for . Right hand only. Excellent varmint / target trigger. 4 oz. to 1.25 lbs. Factory adjusted to break at 5 to 7 oz. Will service Remington models 700, 40X, Model 7, XR-100 and the rear grip XP-100 pistol.
Rifle Basix Remington after-market triggers feature state of the art CNC machined housings made from T6 6061 billet aluminium and are black anodized for a factory appearance. All internal levers are investment cast from A-2 tool steel, CNC machined and heat treated for excellent wear characteristics. The levers are now electro nickel plated for extra protection and bright appearance.read more
The USSOCOM contracting office on behalf of PM A&W is seeking sources within the national technology and industrial base for the following commercial system.
-complete system to include all 3 caliber conversion kits
-any tools needed to complete the conversion
-a light/sound suppressor that can be attached to the system when needed
ASR System specifics: The system must be adaptable to fire the 7.62mm NATO, .300NM, and .338NM cartridges. The system must have total system weight, less suppressor and with unloaded magazine, not to exceed 17lbs (T), 13lbs (O). Length with stock extended, less suppressor, not to exceed 50″(T), 40″(O), length for transport, by means of folding or collapsing shall be 40″ (T), 36″ (O). Accuracy shall be:
7.62 mm 1.0 MOA (ES) at 328 yards (300 meters) (T) 0.5 MOA at 328 yards (300 meters) (O)
.300 NM 1.0 MOA (ES) at 328 yards (300 meters) (T) 0.5 MOA at 328 yards (300 meters) (O)
.338 NM 2.5 MOA (ES) at 328 yards (300 meters) (T) 1.5 MOA at 328 yards (300 meters) (O)
I always find it interesting what the predominant questions are that come from the contact page at a website. in the case of this website Modular Rifle I think all of the questions except for one have one way or another pertained to The Remington RACS Chassis and variants used on the Remington Military Sniper Rifle XM2010 (now known as the Remington M2010) and it’s siblings, Remington MSR, Remington PSR and the Remington CSR. There’s quite a bit of confusion and it’s completely understandable. Maybe we can sort some of it out.read more
The ESS Chassis retains the MDT proven V-block bedding system to form a solid and reliable base for the rifle action. The magazine well has been refined for easy insertion of the magazine, while reducing rattle and movement. The tab style magazine release has been replaced with a semi-flush ambidextrous paddle that can easily be activated by a weak or strong hand. The recoil lug mortise has been designed to accommodate most aftermarket recoil lugs and the trigger area will accommodate most aftermarket triggersread more
The new Cadex Kraken (Cadex Defence CDX-MC Kraken), is a multi-caliber rifle using an innovative (patent pending) barrel change system. This system is the only true no point of impact change between take-down and reassembly of the same barrel. Cadex Kraken is using traditional barrel to action threading system while incorporating a special tool designed to unscrew and torque its barrel from the breech side.read more
The ultimate in long-range prone shooting, the GRS Bolthorn Chassis is superbly balanced and featured. With GRS Stocks advanced understanding of recoil management, the GRS Bolthorn keeps the line of recoil as close to the core line of the barrel as possible, resulting in unsurpassed recoil absorption and greater accuracy.read more
AI AXMC: The latest in a long and distinguished line of combat proven sniper rifles, the AX series comprises the stand-alone AI AX308 (.308 Win) and the multi caliber AI AXMC, a .338 Lap Mag which can be reconfigured to .300 Win Mag or.308 Win in minutes simply by changing the barrel, bolt and magazine/insert.read more
The bolt action rifle has remained fundamentally unchanged for over 150 years. Sure there have been improvements and refinements but for the most part the basic rifle remains unchanged. There’s a receiver with a barrel threaded in to it. The barreled action is placed in a hunk of wood called the rifle stock. A scope is attached directly to the receiver or action. The action is fed by either an internal magazine or external box type magazine. The action is cycled by by lifting up the bolt, sliding it fully rearwards then returning it forwards and down to it’s locked position. Take the safety off, pull the trigger and “bang”. Repeat as necessary. Obviously the previous is over simplified.
Today we are on the precipice of great changes to the bolt action rifle.. Almost weekly some rifle chassis manufacturer or traditional firearm manufacturer announces a new rifle chassis system or a complete rifle built upon a chassis. The chassis eliminates the wood stock formerly used in bolt action rifles. The chassis in many ways are making bolt action rifles more AR-15 or AR-10 like. In fact many rifle chassis utilize AR stocks, pistol grips, scope mounts and any other picatinney rail mounted hardware you can imagine.
The changes do not end theres. Taking a play from Savage some clever folks are adapting Savage drop-in barrels to Remington 700 receivers. This method is called “Remage”. There are currently 3rd party Remington 700 action clones designed for Savage barrels. Not to be beaten at it’s own game several of Remington sniper rifles such as the PSR, MSR and CSR feature quick change barrels that look similar to that of an AR-15. It’s a matter of time before a modular quick change barrel system like that makes it to consumer rifles. We are seeing bolts that feature the best locking methods of all firearms combined in to bolts. These new rifle chassis are also in some cases allowing users to choose the type of magazine whether AR-15, AR 308 or AICS.
The future is also here with ammunition. Despite an emotional debate of purists in love with the .308 Winchester and it’s long proven history 6.5 Creedmoor is poised to be the long range accuracy cartridge king. If the military adopts 6.5 Creedmoor and brings the ammo cost down that will be a game changing moment for shooters and snipers alike.
The purpose of this site is to keep up with these changes for a future, current and historical perspective.