A. Weighing slightly more than 1.25 pounds, the Luth-AR MBA-1 Rifle Buttstock w/.308 Buffer Assembly combines the welcome rigidity of a fixed-stock design with modular enhancements for a customizable fit. Interchangeable with A1 or A2 buttstocks, the MBA-1 features a fully adjustable cheek rest that adds an extra inch of height along with an expandable buttplate that can add 1.06 inches to your rifle’s length-of-pull. A buffer, buffer spring and buttstock-extension tube are also included. It’s available in black, FDE and a Freedom Flag finish. MSRP: $202.94; luth-ar.com
B. Features like a long-operating life, a stainless steel spring, an anti-tilt, self-lubricating follower and constant-curve internal geometry for reliable feeding make the Magpul PMag 20 LR/SR Gen3 Magazine a must-have for your large-platform MSR. Low-profile ribs and aggressive front and rear texturing provide ample, non-slip purchase when handling in myriad environments. The easy-to-disassemble flared floorplate aids in rapid reloads, whether stripping it from the mag well or removing it from a tight magazine pouch. An included pop-off dustcover alleviates pressure on feed lips and allows for long-term storage of loaded magazines. Colors include black and medium coyote tan. MSRP: $19.95; magpul.com
C. Rock River Arms’ BT-3 Lightweight Free Float Rail Handguard 17 inch Extended is compatible with Knight’s Armament SR-25 and DPMS LR-308 platforms. In addition to its continuous top rail, M-Lok slots at the 3-, 6- and 9-o’clock positions provide the ability to attach accessories. Lightening cuts at the quarters add flair and reduce weight. Minor gunsmithing and a low-profile gas block are required for installation. MSRP: $165; rockriverarms.com
D. Available for both AR-10 and AR-15 platforms, Seekins Precision .308 AR DNA (Definitely Not Ambidextrous) Charging Handle is constructed from hard-coat anodized 6061-T6 aluminum. A skeletonized T-section keeps weight down, while its generous size permits charging the rifle by either conventional finger/thumb method or palm blading. Fluting along the body minimizes friction to promote smooth movement. MSRP: $65; seekinsprecision.com
E. Sporting a bolt precision-machined from aerospace-grade 9310 tool steel for added strength, the DPMS-compatible Wilson Combat Bolt Carrier Assembly, 6.5CM/.308 is coated in back-nitride for low maintenance and enhanced corrosion resistance. A portion of the carrier is smooth and includes forward-assist cuts along with a properly staked gas key. The addition of an S7 extractor easily handles high-pressure loads while providing uncompromising reliability. MSRP: $289.95, wilsoncombat.com