SLR B56 Billet 300 BLK with Noveske 10.5-inch Barrel
$2,068.016 parts
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8.2-inch 300 BLK on a BCM Upper and Geissele DDC Lower
$1,205.925 parts
Aero 10.5-inch Folder with FN Barrel and Geissele MK14
$2,451.8712 parts
Block II-Style DD M4A1 14.5-inch on an Aero M4E1 Lower
$2,287.458 parts
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Geissele Super Semi-Automatic Enhanced (SSA-E) Trigger- 05-160
$245.00 at Brownells · 9 stores
In stock
Aero Precision AR-15 M4E1 Stripped Lower Receiver - Black
$124.99 at Aero Precision · 2 stores
M16 Bolt Carrier Group Black
$211.26 at Brownells · 6 stores
In stock
AR-15 Talon Safety Selector Ambidextrous Black
$64.95 at Brownells · 7 stores
In stock
AR-15 Raptor Ambidextrous Charging Handle Black
$104.95 at Brownells · 10 stores
In stock
MOE K2 Grip Polymer Black
$14.99 at GunMag Warehouse · 9 stores
In stock
Upper Receiver Assembly
$129.00 at Brownells · 3 stores
Out of stock
H1 Super 42 Braided Wire Buffer Spring And Buffer Combo, H2
$108.99 at Kentucky Gun Co · 8 stores
In stock
From the blog
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How to Build an AR-15: Parts List, Tools & Steps
Everything you need to build an AR-15: parts list with current prices, tools, and step-by-step photos for the lower and upper receiver.
AR-15 End Plates and Castle Nuts: QD Sling Points and Staking
Pick a QD or loop end plate, torque the castle nut, and stake it so it never backs out. Steps and parts, with prices.
Best Suppressors for 5.56 AR-15s (Live Prices)
Seven 5.56 suppressors compared on length, weight and mount, plus what the October 2026 rule change means for buying one.
Best AR-15 Weapon Lights: Lumens vs Candela (Live Prices)
Why candela matters more than lumens on a rifle, and how SureFire, Modlite and Streamlight lights compare, with prices.