Accuracy Systems

Accuracy Systems Inc. operates as a machine shop specializing in converting inherently inaccurate rifles into precision shooters. Their core business: take your Mini-14, Mini-30, Remington 700, AR-15, or AR-10 and engineer it to shoot sub-MOA groups.

The company doesn't accept walk-ins—their location at 1661 Behrens Rd, Byers, Colorado 80103 is a working machine shop with active equipment. Call (303) 822-6849 to schedule an appointment. Hours are Monday-Thursday 8:30 AM to 4:30 PM, Friday 8:00 AM to 12:00 PM Mountain Time (closed weekends).

• •They were the first to offer .850" Varmint and 1" Bull Barrels for the Mini-14/Mini-30. Here's the catch that matters: most competitors only thicken the barrel past the gas block. Accuracy Systems machines true 1" diameter barrels from the receiver all the way through the gas block and to the muzzle—full length.

Real example from a customer: "I bought this rifle back in 1986 and haven't been able to hit the broad side of a barn with it at ten feet. Groupings at 50 feet measured in FEET, not inches... I ran across your website... Groups were instantly one inch at 150ft!"

After conversion with ASI Ultra Match barrels, rifles consistently shoot under 1 MOA @ 100 yards with factory-selected ammunition. Results as tight as 0.250" to 0.750" three-shot groups are documented. They use Krieger barrels for build quality and offer:

• •Ultra Match 416 Stainless (tight bore tolerances)
• •6.5 Creedmoor, .308 Winchester, .223/5.56, .243 WSSM and other calibers
• •24" or custom length barrel options
• •Brushed stainless or other finishes
• •1x9 or custom twist rates

• •Harmonic Barrel Stabilizer II with adjustable gas blocks (reduces recoil, improves groups)
• •Adjustable and non-adjustable gas blocks (Generations 4, 5, 6)
• •Trigger jobs for Mini 14/30, Remington pumps (crisp break, lighter pull)
• •Muzzle brakes and compensators (360-degree ported designs)
• •Shock buffers and guide springs for recoil management
• •Gas bushing kits (precision fit to reduce gas blow-by)
• •Scope bases, mounts, sights (M1A/M14 style rear sights)
• •Stocks and handguards (wood, metal alloy, plastic options)
• •Extended magazine releases, bolts, firing pins

• •Ruger Mini-14: 1" OD x 22" bull barrel with 360-degree 32-port muzzle brake, fluted front/rear
• •Remington 700: ASI Ultra Match 1.25" diameter x 28" bull barrel
• •AR-10: Custom 6.5 Creedmoor long-range builds
• •Krieger Barrels: 24" x 1" options capable of ½ MOA @ 100 yards

The website archives 15+ years of customer testimonials (2004-2025). Recent examples from 2015:

• •Chris Caruso (Henderson, NV): "Both uppers are incredible... sub 1/2 MOA, with groups more typically closer to 1/4 MOA. The 308 is actually outperforming the 6.5CM."
• •Herb Seegers: Harmonic Stabilizer II reduced recoil dramatically; 100-yard groups improved from 8" spread to 3" with hunting ammo.
• •Chet Fryjoff: Rem 700 300 Win Mag with new ASI trigger; factory Hornady produced flawless function and tight groups.
• •Kenneth Fellows: Mini-14 build "turning a lot of heads here in NY."

ASI provides detailed PDF instructions for:

• •Gas bushing trimming and installation
• •Barrel break-in procedures (Krieger brand)
• •Harmonic Barrel Stabilizer II assembly
• •Adjustable gas block setup (Gens 4, 5, 6)
• •Trigger job procedures
• •Pin bedding
• •Extended magazine release installation
• •M1A carbine-style rear sight installation

Contact: - Phone: (303) 822-6849 - Fax: (720) 367-5095 - Email: [email protected] - Appointment required (no walk-ins)

• •Online store available with full product catalog, pricing, and terms/conditions.

Prices subject to change without notice.