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CMMG
Overview
The CMMG AR-15 Mil-Spec Trigger Kit is designed specifically for the AR-15 platform, providing reliable performance in a classic configuration. This trigger kit features a standard mil-spec design, which ensures compatibility across a wide range of builds and maintains the functionality expected in military-grade components. You will often find this trigger kit in mid-length gas system builds chambered in 5.56 NATO, making it a solid choice for builders looking to adhere to traditional specifications while ensuring dependable operation.
Prices checked
CMMG AR-15 Mil-Spec Trigger KIT is the ninth most added trigger on GunPartPicker so far in November 2026, behind the Rise Armament Ra-524 Blitz Performance Trigger Drop-In, with about 3% of all triggers added to builds. Up from #11 in October. Builds with this trigger are mostly chambered in 5.56 NATO (72%, then 300 Blackout 10%), split between mid-length (46%) and carbine-length (29%) gas systems, and mostly AR-15 (92%).
Availability is good: it was in stock at one retailer or another nearly every time we checked in October 2026, and today all 9 retailers we track have it in stock. It dipped to $32.99 at Primary Arms for a stretch in October 2026, under its usual $35.49, so sales do come around. Buying today, the lowest price is $30.99 at BattleHawk Armory, which matches the best price we saw in October.
Updated · from real builds on GunPartPicker · Prices checked · refreshed daily across 37 retailers
We ranked every trigger by how often it shows up in real builds on GunPartPicker.
Read the guide: AR-15 Trigger Popularity Report →Check it against the live catalog:
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Aggregated and anonymized data showing how builders use this product
Builds in the community that include the Cmmg Ar-15 Mil-Spec Trigger Kit
| Build | Parts | Total |
|---|---|---|
 | 22 | $905.18 |
 | 12 | $1012.57 |
 | 27 | $2247.72 |
 | 15 | $926.63 |
 | 14 | $3186.28 |
 | 16 | $1058.23 |
 | 23 | $1458.20 |
 | 15 | $4135.16 |
 | 16 | $297.43 |
 | 24 | $1256.51 |
 | 27 | $3308.31 |
 | 24 | $1228.31 |
2 global ratings
Top reviews
CMMG mil spec trigger kit is exactly the upgrade you need over the basic FCG that comes in a stripped lower. Hammer spring is the standard tension, sear engagement is correct. Drops in any milspec lower. Cant go wrong for the price.
standard mil spec single stage but with better than typical tolerances. wall is defined, no squish in the takeup, break is consistent. for the price of two beers its a no brainer upgrade kit
