NOTE: We are a build-to-order manufacturer. All complete firearms are built in the order in which they are received, with a current lead time of 2-4 weeks.
Factory-applied H-Series Cerakote® is now standard on ALL A115s!
Inspired by builds we have used with great success for many years, the A115 R/Series Special Purpose Rifle (or SPR) is a user-friendly, midweight, fully capable rifle ready for any type of work at medium to extended ranges, hunting, or in semi-auto precision rifle competition. This model is in 6 ARC, one of the highest performing small frame cartridges for the AR15 family of rifles. We use only all American-made products to build the best tools for Life & Liberty. Using a 40-point QC checklist, we accept nothing less than perfection in every firearm we build.
All R/Series A115 SPRs feature the latest fully adjustable gas system assemblies by RIFLESPEED for "on-the-fly" toolless tuning for normal and suppressed use, properly weighted buffers, SPRINCO chrome-silicon buffer springs for a lifetime of reliable service, Geissele triggers and much more. Complete rifles ship free in a US-made hardshell case.
We guarantee Sub-MOA performance with high-quality, factory-match-grade ammunition in all of our A115 builds.
NOTE: All A115 R/Series series firearms are configured with properly weighted buffers and springs tuned for full power 223 Remington or 5.56 NATO spec ammunition. While underpowered and other imported ammunition can function using the full adjustment range of the Riflespeed Gas Control, the best performance and reliability will be achieved using higher-quality, proper-spec ammunition.
Product images may show accessories (muzzle devices, optics, mounts, weapon lights, suppressors, other options, etc.) that are not included.
- *This product requires an FFL to purchase and requires the completion of an ATF Form 4473 and a successful background check completed by an FFL dealer. Please have your preferred dealer email their FFL to [email protected] referencing your name and order number so we may assign the FFL to the proper order. If this information is not submitted or is incomplete, the shipping of your order will be delayed. Any non-FFL products purchased on the same order will be shipped separately to the address of your choosing.
SPECIFICATIONS;
Upper Receiver:
• Forged 7075 T6 aircraft-grade aluminum, matte black hard-coat anodized per MIL-A-8625 Type III Class 2 specifications
Barrel Options (All .750" Gas Journals):
- • Ballistic Advantage 18" 6mm ARC, SPR Profile, 416R Stainless, Rifle-length gas, 1:7 RH Twist, , QPQ Corrosion-Resistant Finish, M4 feed ramps (Standard - Uses RS7533 Gas Control)
- • Centurion Arms 18" 5.56 NATO, SPR Profile, 416R Stainless, Rifle+1 length gas, 1:7 RH Twist, M4 feed ramps (Uses RS7521 Gas Control)
- • HARD PINNING IS INCLUDED with complete builds and upper groups
Upper Parts Detail:
- • Forward Assist
- • Ejection Port Door Assembly
- • RIFLESPEED RS7533 or RS7521 Adjustable Gas Control (See details HERE), Straight Stainless Steel gas tube
- • 15" Cross Machine & Tool HDM M-LOK® Compatible Handguard
- • BCM GUNFIGHTER Mod 3x3 Ambidextrous Charging Handle(Large Latch)
- • Forward Controls Design 6315KM
- • Magpul MBUS® Front & Rear Sight Set (Optional Upgrade)
- BCG:
- • 8620 Steel carrier, M16 cut, Diamond-Like Carbon (DLC), properly staked 4130 carrier key with Grade 8 screws
- • DLC 9310 steel bolt, shot-peened 4140 extractor, MPI inspected
- • Mil-Spec chrome-silicon extractor spring with black insert and Viton O-ring
- • Increased durability and performance, self-lubricating, easy cleaning
- Lower Receiver:
- • Forged 7075 T6 aircraft-grade aluminum, M16 cut, matte black hard-coat anodized per MIL-A-8625 Type III Class 2 specifications
- Lower Parts Detail:
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- • Standard Lower Parts Kit w/ Magpul Billet Trigger Guard
- • Geissele Automatics SSA Trigger
- • Radian Talon 45°/90° Ambi Safety Selector
- • Standard Mil-Spec A2 Receiver Extension
- • Standard Rifle Buffer
- • SPRINCO Green Standard Power Chrome-Silicon Buffer Spring
- • Magpul MOE A2 Stock
- • B5 Systems P23 Grip
- • Includes one (1) standard capacity Magpul M2 PMAG®
Optional: A5 upgrade with 9-position extension, A5H2 buffer, choice of B5 Systems Bravo or Precision stock, and Green SPRINCO rifle buffer spring for smoother recoil impulse,
reduced cyclic rate, and improved performance.
Length: 38.2in
Weight: 7lbs 13oz

WARNING: This product can expose you to chemicals, including lead, which is known to the State of California to cause cancer and birth defects or other reproductive harm. For more information, go to www.P65Warnings.ca.gov.