DD4 RIS III 11.5-inch on an LWRC IC Ambi Lower
$4,152.546 parts
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DD MK18 FDE SBR on a Griffin MK2 Terra Brown Lower
$1,774.003 parts
BCM MK2 16-inch on a Rock River Lower with Sig Tango MSR
$1,823.368 parts
6mm MAX Mk12-Style SPR on BCM MK2 and LWRCI Receivers
$3,672.369 parts
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Geissele Super Semi-Automatic Enhanced (SSA-E) Trigger- 05-160
$245.00 at Brownells · 8 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 · 8 stores
In stock
H1 Super 42 Braided Wire Buffer Spring And Buffer Combo, H2
$108.99 at Kentucky Gun Co · 8 stores
In stock
MOE K2 Grip Polymer Black
$14.99 at GunMag Warehouse · 9 stores
In stock
B5 Systems SOPMOD Bravo Stock - Black BRV-201-01
$54.19 at Palmetto State Armory
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.
Ambidextrous vs Extended Charging Handle Latch: Which AR-15 Handle? (Live Prices)
Ambidextrous or extended latch? What each charging handle latch does, how big BCM, Strike and Radian latches are, what fits, and live prices.
Best AR-15 Stocks: Top Picks for Every Build (Live Prices)
Our picks for the best AR-15 adjustable stocks, from the Magpul MOE SL and CTR to the B5 SOPMOD and PRS Gen3, with maker …
AR-9 Guide: Glock vs Colt Mags, Blowback vs Delayed Blowback and Buffers
The 9mm AR explained: what carries over from an AR-15, blowback vs delayed blowback, Glock vs Colt magazines, buffer weights and which parts to …