SLR Rifleworks SLR-B30 AR-10 .308 Win Semi-Auto Rifle, 20 in Wilson Combat Fluted Barrel, Geissele SSA-E, Magpul PRS GEN3, FDE
This custom SLR Rifleworks SLR-B30 pairs billet FDE receivers and an extended free-float handguard with premium Wilson Combat internals and a Geissele SSA-E trigger. It features a 20 inch fluted, threaded Wilson Combat .308 Win barrel with 1:10 twist, Wilson Combat BCG, gas block, and charging handle, plus a Magpul PRS GEN3 adjustable stock. The upper is a slick-side design without a forward assist and includes a brass deflector.
SLR Rifleworks upper, lower, and handguard anchor the build with a consistent FDE finish and multiple SLR logos. The handguard provides an extended, free-floated interface with a continuous 12 o'clock Picatinny rail for mounting flexibility. The slick-side upper minimizes external controls while retaining a brass deflector for reliable operation.
The barrel system centers on a Wilson Combat 20 inch fluted .308 Win barrel with a 1:10 twist, threaded muzzle, and an installed black multi-port flash hider/compensator. A Wilson Combat low-profile gas block, Wilson Combat bolt carrier group, and Wilson Combat charging handle round out the operating components.
Fire control is handled by a Geissele SSA-E two-stage trigger with a curved, G-marked shoe, providing a clean, defined break. Ambidextrous safety selectors and a Magpul pistol grip support comfortable handling and control.
The rifle uses the AR-10 pattern with direct impingement operation and accepts SR-25/LR-308 pattern magazines. Capacity is 20+1. A Magpul PRS GEN3 stock offers tool-less adjustments for length of pull and cheek height; the current length of pull is configured to approximately 15 inches.
Condition
Overall Condition: Very good condition, showing only light, superficial signs of prior handling or use.
Bore Condition: Excellent - Clean, mirror finish, no signs of wear.
Bore Rifling: Excellent Rifling - Sharp lands and grooves.
Specific Condition Notes: The rifle remains in great overall shape with only minor exterior scratches and small blemishes visible.
What’s Included
- No case included
- 1x 20-round Magpul PMAG LR/SR GEN M3 magazine marked 7.62x51
The SLR-B30’s billet receivers and matching FDE finish present a cohesive, purpose-built package. The extended SLR free-float handguard enhances stability around the 20 inch barrel and provides a continuous top rail for mounting. Multiple SLR logos are present on the receivers and handguard, underscoring the factory components used in this build.
Wilson Combat parts drive the core performance: a fluted, threaded .308 Win barrel with a 1:10 twist, a low-profile gas block, a robust BCG, and a charging handle from the same maker. The installed multi-port flash hider/compensator adds muzzle control at the threaded interface.
The Geissele SSA-E two-stage trigger, with its curved shoe and G-mark, delivers precise trigger control. Ambidextrous safety selectors and the Magpul pistol grip contribute to practical ergonomics on both sides of the rifle.
At the rear, the Magpul PRS GEN3 stock enables tool-less adjustments for length of pull and cheek height, and this example is set to about 15 inches of LOP. The slick-side upper deletes the forward assist while retaining a brass deflector for clean ejection. The rifle feeds from SR-25/LR-308 pattern magazines and is rated at 20+1 capacity.