CMMG AR15 BUFFER TUBE CASTLE NUT
- UPC
- 815835017426
- Manufacturer
- CMMG
$8.75
$10.26
Best offer
Brownells $6.99
Cheaper Offer Available
Brownells lists a matched offer at $6.99, $1.76 (20%) less than this listing's $8.75.
Price Intelligence
High confidence
Against lowest
Matches lowest seen
Typical price
15% below typical
From tracked high
$1.64 lower (16%)
Data depth
90 days, 4 price changes
Enough history to judge this against real observed movement.
Tracked for 90 days. Last checked: 2026-09-24. Recorded 4 price changes. The average price is $9.96. The price has ranged from $8.75 to $10.39. The current price of $8.75 is -12% below average.
Lowest
$8.75
Highest
$10.39
Average
$9.96
Tracked
90 days
Price Changes
4
Last checked
2026-09-24
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Live Offers
3 retailers list CMMG - AR-15 MK4 RECEIVER EXTENSION NUT; 3 in stock, in-stock prices run $6.99 to $8.79.
Best Price History Across Offers
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Insights
Price Dropping
Price has decreased over the last 3 days — from $10.39 to $8.75.
Recent Price Drop
Dropped $1.51 (14.7%) since 2026-08-29.
